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  • In C#: How to declare a generic Dictionary whose key and value types have a common constraint type?

    - by Marcel
    Hi all, I want to declare a dictionary that stores typed IEnumerable's of a specific type, with that exact type as key, like so: private IDictionary<T, IEnumerable<T>> _dataOfType where T: BaseClass; //does not compile! The concrete classes I want to store, all derive from BaseClass, therefore the idea to use it as constraint. The compiler complains that it expects a semicolon after the member name. If it would work, I would expect this would make the later retrieval from the dictionary simple like: IEnumerable<ConcreteData> concreteData; _sitesOfType.TryGetValue(typeof(ConcreteType), out concreteData); How to define such a dictionary?

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  • Specify a custom dictionary for FxCop and Visual Studio source analysis

    - by Marko Apfel
    Renaming the default custom dictionary from CustomDictionary.xml to an other name – for instance FxCop.CustomDictionary.xml needs some additional changes to work in involved applications. Visual Studio Team System code analysis For Visual Studio Team System code analysis this file should be added as a link to all projects and setted to be the Build Action CodeAnalysisDirectory. Build target In a build target the command line tool FxCopCmd should be called with the /dictionary parameter: <Target Name="FxCop"> <Exec Command="&quot;$(ProjectDir)..\..\build\FxCop\FxCopCmd.exe&quot; /file:&quot;$(TargetPath)&quot; /project:&quot;$(ProjectDir)..\EsriDE.SfgPraxair.FxCop&quot; /directory:&quot;$(ProjectDir)..\..\lib\Esri.ArcGIS&quot; /directory:&quot;$(ProjectDir)..\..\lib\Microsoft&quot; /dictionary:&quot;$(ProjectDir)..\FxCop.CustomDictionary.xml&quot; /out:&quot;$(OutDir)..\$(ProjectName).FxCopReport.xml&quot; /console /forceoutput /ignoregeneratedcode"> </Exec> <Message Text="FxCop finished." /> </Target> FxCop-GUI (standalone application) In FxCop-GUI is no option to specify an own file name – but you could add a hint in the FxCop project file. Open your this file and look for the line: <CustomDictionaries SearchFxCopDir="True" SearchUserProfile="True" SearchProjectDir="True" /> Then change it to: <CustomDictionaries SearchFxCopDir="True" SearchUserProfile="True" SearchProjectDir="True"> <CustomDictionary Path="FxCop.CustomDictionary.xml"/> </CustomDictionaries> Ready :-)

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  • Switch or a Dictionary when assigning to new object

    - by KChaloux
    Recently, I've come to prefer mapping 1-1 relationships using Dictionaries instead of Switch statements. I find it to be a little faster to write and easier to mentally process. Unfortunately, when mapping to a new instance of an object, I don't want to define it like this: var fooDict = new Dictionary<int, IBigObject>() { { 0, new Foo() }, // Creates an instance of Foo { 1, new Bar() }, // Creates an instance of Bar { 2, new Baz() } // Creates an instance of Baz } var quux = fooDict[0]; // quux references Foo Given that construct, I've wasted CPU cycles and memory creating 3 objects, doing whatever their constructors might contain, and only ended up using one of them. I also believe that mapping other objects to fooDict[0] in this case will cause them to reference the same thing, rather than creating a new instance of Foo as intended. A solution would be to use a lambda instead: var fooDict = new Dictionary<int, Func<IBigObject>>() { { 0, () => new Foo() }, // Returns a new instance of Foo when invoked { 1, () => new Bar() }, // Ditto Bar { 2, () => new Baz() } // Ditto Baz } var quux = fooDict[0](); // equivalent to saying 'var quux = new Foo();' Is this getting to a point where it's too confusing? It's easy to miss that () on the end. Or is mapping to a function/expression a fairly common practice? The alternative would be to use a switch: IBigObject quux; switch(someInt) { case 0: quux = new Foo(); break; case 1: quux = new Bar(); break; case 2: quux = new Baz(); break; } Which invocation is more acceptable? Dictionary, for faster lookups and fewer keywords (case and break) Switch: More commonly found in code, doesn't require the use of a Func< object for indirection.

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  • How to add custom hooks to controllers in ASP.NET MVC2

    - by Adrian
    Hi, I've just started a new project in ASP.net 4.0 with MVC 2. What I need to be able to do is have a custom hook at the start and end of each action of the controller. e.g. public void Index() { *** call to the start custom hook to externalfile.cs (is empty so does nothing) ViewData["welcomeMessage"] = "Hello World"; *** call to the end custom hook to externalfile.cs (changes "Hello World!" to "Hi World") return View(); } The View then see welcomeMessage as "Hi World" after being changed in the custom hook. The custom hook would need to be in an external file and not change the "core" compiled code. This causes a problem as with my limited knowledge ASP.net MVC has to be compiled. Does anyone have any advice on how this can be achieved? Thanks

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  • How to make drupal known submitting custom content

    - by Andrew
    Hi, I know this is not a drupal forum but, as I’m not getting any response there, I decided to give it a shot here. I’m creating a web site that accepts custom content from users. So, for that matter, this site has a form and a custom module. Instead of using admin theme, this form is placed inside custom template which is created to have a uniform look with the rest of the pages. As a result, creating form elements through hook_form is out of question. Here’s where my problems lie. As this form uses custom theme, I’m not sure as to what can I do to make drupal know that user is submitting new content data when the form is submitted? Would I need to use same query string that of content submission page of admin page like - ?q=node/add/page for action attribute of the html form? (OR) the only way is to map the url to my custom function and invoke some sort of hook inside of it? Thanks

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  • IIS7 Custom ASP.NET Errors

    - by Nathan Roe
    I'm trying to setup a custom error page for the IIS 7 404.13 (Content length too large) error. Here's the relevant sections of my web.config file: <system.webServer> <httpErrors errorMode="Custom" existingResponse="Replace"> <remove statusCode="404" subStatusCode="13" /> <error statusCode="404" subStatusCode="13" prefixLanguageFilePath="" path="/FileUpload/Test.aspx" responseMode="ExecuteURL" /> </httpErrors> <security> <requestFiltering> <requestLimits maxAllowedContentLength="10240" /> </requestFiltering> </security> </system.webServer> The response that is being sent back to the server is blank. The Test.aspx file is not blank. Any idea what's going on here?

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  • IIS7 Custom ASP.NET Errors

    - by Nathan
    I'm trying to setup a custom error page for the IIS 7 404.13 (Content length too large) error. Here's the relevant sections of my web.config file: <system.webServer> <httpErrors errorMode="Custom" existingResponse="Replace"> <remove statusCode="404" subStatusCode="13" /> <error statusCode="404" subStatusCode="13" prefixLanguageFilePath="" path="/FileUpload/Test.aspx" responseMode="ExecuteURL" /> </httpErrors> <security> <requestFiltering> <requestLimits maxAllowedContentLength="10240" /> </requestFiltering> </security> </system.webServer> The response that is being sent back to the server is blank. The Test.aspx file is not blank. Any idea what's going on here?

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  • Ubuntu 12.04 - Custom Quick Launcher Menu

    - by gotqn
    I have been using Ubuntu for few weeks now and I am have been trying to create custom menu which to add in the launcher. Please, note that my version is 12.04 and I have not got any experience with Linux. I have checked a lot articles and questions likes this one, but have not been able to find what I am looking for. I want to create a custom quick launcher menu and to add it the the standard launcher, but I want to add links to other programs or folders in it. For example: A browsers menu - when it is open (with right mouse click on it), my browsers will be listed: chrome safari opera firefox I even may add their icons there. Music menu - some shortcuts to my favorite music folders.

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  • Hashtable/Dictionary but with key composed of multiple values?

    - by MC
    Lets say I have an object that has stringProp1, stringProp2. I wish to store each combination of stringProp1, stringProp2 in a Dictionary. Initially I was storing the key as key = stringProp1+stringProp2 but this can actually cause a bug depending on the 2 values. Is the best solution for this problem to create a custom dictionary class or is there a better way using built-in .NET classes?

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  • Is there a way to keep track of the ordering of items in a dictionary?

    - by Corpsekicker
    I have a Dictionary<Guid, ElementViewModel>. (ElementViewModel is our own complex type.) I add items to the dictionary with a stock standard items.Add(Guid.NewGuid, new ElementViewModel() { /*setters go here*/ });, At a later stage I remove some or all of these items. A simplistic view of my ElementViewModel is this: class ElementViewModel { Guid Id { get; set; } string Name { get; set; } int SequenceNo { get; set; } } It may be significant to mention that the SequenceNos are compacted within the collection after adding, in case other operations like moving and copying took place. {1, 5, 6} - {1, 2, 3} A simplistic view of my remove operation is: public void RemoveElementViewModel(IEnumerable<ElementViewModel> elementsToDelete) { foreach (var elementViewModel in elementsToDelete) items.Remove(elementViewModel.Id); CompactSequenceNumbers(); } I will illustrate the problem with an example: I add 3 items to the dictionary: var newGuid = Guid.NewGuid(); items.Add(newGuid, new MineLayoutElementViewModel { Id = newGuid, SequenceNo = 1, Name = "Element 1" }); newGuid = Guid.NewGuid(); items.Add(newGuid, new MineLayoutElementViewModel { Id = newGuid, SequenceNo = 2, Name = "Element 2" }); newGuid = Guid.NewGuid(); items.Add(newGuid, new MineLayoutElementViewModel { Id = newGuid, SequenceNo = 3, Name = "Element 3" }); I remove 2 items RemoveElementViewModel(new List<ElementViewModel> { item2, item3 }); //imagine I had them cached somewhere. Now I want to add 2 other items: newGuid = Guid.NewGuid(); items.Add(newGuid, new MineLayoutElementViewModel { Id = newGuid, SequenceNo = 2, Name = "Element 2, Part 2" }); newGuid = Guid.NewGuid(); items.Add(newGuid, new MineLayoutElementViewModel { Id = newGuid, SequenceNo = 3, Name = "Element 3, Part 2" }); On evaluation of the dictionary at this point, I expected the order of items to be "Element 1", "Element 2, Part 2", "Element 3, Part 2" but it is actually in the following order: "Element 1", "Element 3, Part 2", "Element 2, Part 2" I rely on the order of these items to be a certain way. Why is it not as expected and what can I do about it?

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  • Workflow Foundation (WF) -- Why does Visual Studio's designer not use my custom ActivityDesignerThem

    - by stakx
    Problem: I am trying to customize a custom Workflow Foundation activity (called CustomActivity) so that it will display with a specific background color. What I've got so far: First, I'm defining a custom ActivityDesignerTheme as follows: public class CustomActivityTheme : ActivityDesignerTheme { public CustomActivityTheme(WorkflowTheme theme) : base(theme) { this.BackColorStart = Color.FromArgb(0xff, 0xf4, 0xf4, 0xf4); this.BackColorEnd = Color.FromArgb(0xff, 0xc0, 0xc0, 0xc0); this.BackgroundStyle = LinearGradientMode.Horizontal; } } Then, I am applying this theme to a custom ActivityDesigner (apparently the theme must be applied to a designer, and not to an activity): [ActivityDesignerTheme(typeof(CustomActivityTheme))] public class CustomActivityDesigner : SequentialActivityDesigner { ... } Ultimately, I am applying the custom designer to my custom Activity: [Designer(typeof(CustomActivityDesigner))] public partial class CustomActivity : SequenceActivity { ... } Now, according to some code examples that I've seen, this should do the trick. However, when I include an instance of my CustomActivity in a workflow, my custom theme is not applied and it is displayed in the Visual Studio Designer as any standard activity would (white background etc.). I tried re-compiling and even re-starting Visual Studio a couple of times, just to make sure the used assembly is up-to-date, but to no avail. My question: What am I missing? Why does Visual Studio's Workflow Designer not respect the CustomActivityTheme when it displays a CustomActivity?

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  • Magento - Show Custom Attributes in Grouped Product table.

    - by greencoconut
    I need to find a way to show the value of a custom attribute in place of the "Product Name" shown in the image below. I'm working with /app/design/frontend/default/defaultx/template/catalog/product/view/type/grouped.php The code below doesn't work(the custom attribute is yearmade): <?php if (count($_associatedProducts)): ?> <?php foreach ($_associatedProducts as $_item): ?> <tr> <td><?php echo $this->htmlEscape($_item->getYearmade()) ?></td> Any help would be appreciated. EDIT: So the answer turned out to be quite simple. You see what I failed to mention above was that there was indeed output... but that it was just a number (eg: 52). Turns out this was the ID for that custom attribute value (It was a Dropdown type of custom attribute). So in summary This works for custom attributes of type text: echo $this->htmlEscape($_item->getYearmade()) But for all other types of custom attribute (I think), the following should be used: echo $this->htmlEscape($_item->getAttributeText('yearmade')) I would not have discovered this without the most excellent answer provided by Alan Storm, below. Thank you sir.

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  • Pair attribute naming in custom configSections

    - by fearofawhackplanet
    I'm trying to store a user list in a config file. I've been looking at DictionarySectionHandler and NameValueSectionHandler. I'm not too sure what the difference between these two is, but anyway, neither of them do exactly what I'd like. You can add a custom config section like so: <configSections> <section name="userAges" type="System.Configuration.DictionarySectionHandler"/> </configSections> <userAges> <add key="userName1" value="10" /> <add key="userName2" value="52" /> <userAges> Which is ok, but actually I'd prefer to be able to write: ... <userAges> <add user="userName1" age="10" /> <add user="userName2" age="52" /> <userAges> Which I feel would make the config file clearer to anyone who needed to add/remove users in future. Is there an easy way to do this?

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  • Binding to a dictionary in Silverlight with INotifyPropertyChanged

    - by rip
    In silverlight, I can not get INotifyPropertyChanged to work like I want it to when binding to a dictionary. In the example below, the page binds to the dictionary okay but when I change the content of one of the textboxes the CustomProperties property setter is not called. The CustomProperties property setter is only called when CustomProperties is set and not when the values within it are set. I am trying to do some validation on the dictionary values and so am looking to run some code when each value within the dictionary is changed. Is there anything I can do here? C# public partial class MainPage : UserControl { public MainPage() { InitializeComponent(); MyEntity ent = new MyEntity(); ent.CustomProperties.Add("Title", "Mr"); ent.CustomProperties.Add("FirstName", "John"); ent.CustomProperties.Add("Name", "Smith"); this.DataContext = ent; } } public class MyEntity : INotifyPropertyChanged { public event PropertyChangedEventHandler System.ComponentModel.INotifyPropertyChanged.PropertyChanged; public delegate void PropertyChangedEventHandler(object sender, System.ComponentModel.PropertyChangedEventArgs e); private Dictionary<string, object> _customProps; public Dictionary<string, object> CustomProperties { get { if (_customProps == null) { _customProps = new Dictionary<string, object>(); } return _customProps; } set { _customProps = value; if (PropertyChanged != null) { PropertyChanged(this, new PropertyChangedEventArgs("CustomProperties")); } } } } VB Partial Public Class MainPage Inherits UserControl Public Sub New() InitializeComponent() Dim ent As New MyEntity ent.CustomProperties.Add("Title", "Mr") ent.CustomProperties.Add("FirstName", "John") ent.CustomProperties.Add("Name", "Smith") Me.DataContext = ent End Sub End Class Public Class MyEntity Implements INotifyPropertyChanged Public Event PropertyChanged(ByVal sender As Object, ByVal e As System.ComponentModel.PropertyChangedEventArgs) Implements System.ComponentModel.INotifyPropertyChanged.PropertyChanged Private _customProps As Dictionary(Of String, Object) Public Property CustomProperties As Dictionary(Of String, Object) Get If _customProps Is Nothing Then _customProps = New Dictionary(Of String, Object) End If Return _customProps End Get Set(ByVal value As Dictionary(Of String, Object)) _customProps = value RaiseEvent PropertyChanged(Me, New PropertyChangedEventArgs("CustomProperties")) End Set End Property End Class Xaml <TextBox Height="23" Name="TextBox1" Text="{Binding Path=CustomProperties[Title], Mode=TwoWay}" /> <TextBox Height="23" Name="TextBox2" Text="{Binding Path=CustomProperties[FirstName], Mode=TwoWay}" /> <TextBox Height="23" Name="TextBox3" Text="{Binding Path=CustomProperties[Name], Mode=TwoWay}" />

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  • ASP.NET Creating a Rich Repeater, DataBind wiping out custom added controls...

    - by tonyellard
    So...I had this clever idea that I'd create my own Repeater control that implements paging and sorting by inheriting from Repeater and extending it's capabilities. I found some information and bits and pieces on how to go about this and everything seemed ok... I created a WebControlLibrary to house my custom controls. Along with the enriched repeater, I created a composite control that would act as the "pager bar", having forward, back and page selection. My pager bar works 100% on it's own, properly firing a paged changed event when the user interacts with it. The rich repeater databinds without issue, but when the databind fires (when I call base.databind()), the control collection is cleared out and my pager bars are removed. This screws up the viewstate for the pager bars making them unable to fire their events properly or maintain their state. I've tried adding the controls back to the collection after base.databind() fires, but that doesn't solve the issue. I start to get very strange results including problems with altering the hierarchy of the control tree (resolved by adding [ViewStateModeById]). Before I go back to the drawing board and create a second composite control which contains a repeater and the pager bars (so that the repeater isn't responsible for the pager bars viewstate) are there any thoughts about how to resolve the issue? In the interest of share and share alike, the code for the repeater itself is below, the pagerbars aren't as significant as the issue is really the maintaining of state for any additional child controls. (forgive the roughness of some of the code...it's still a work in progress) using System; using System.Collections.Generic; using System.ComponentModel; using System.Text; using System.Data; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; [ViewStateModeById] public class SortablePagedRepeater : Repeater, INamingContainer { private SuperRepeaterPagerBar topBar = new SuperRepeaterPagerBar(); private SuperRepeaterPagerBar btmBar = new SuperRepeaterPagerBar(); protected override void OnInit(EventArgs e) { Page.RegisterRequiresControlState(this); InitializeControls(); base.OnInit(e); EnsureChildControls(); } protected void InitializeControls() { topBar.ID = this.ID + "__topPagerBar"; topBar.NumberOfPages = this._currentProperties.numOfPages; topBar.CurrentPage = this.CurrentPageNumber; topBar.PageChanged += new SuperRepeaterPagerBar.PageChangedEventHandler(PageChanged); btmBar.ID = this.ID + "__btmPagerBar"; btmBar.NumberOfPages = this._currentProperties.numOfPages; btmBar.CurrentPage = this.CurrentPageNumber; btmBar.PageChanged += new SuperRepeaterPagerBar.PageChangedEventHandler(PageChanged); } protected override void CreateChildControls() { EnsureDataBound(); this.Controls.Add(topBar); this.Controls.Add(btmBar); //base.CreateChildControls(); } private void PageChanged(object sender, int newPage) { this.CurrentPageNumber = newPage; } public override void DataBind() { //pageDataSource(); //DataBind removes all controls from control collection... base.DataBind(); Controls.Add(topBar); Controls.Add(btmBar); } private void pageDataSource() { //Create paged data source PagedDataSource pds = new PagedDataSource(); pds.PageSize = this.ItemsPerPage; pds.AllowPaging = true; // first get a PagedDataSource going and perform sort if possible... if (base.DataSource is System.Collections.IEnumerable) { pds.DataSource = (System.Collections.IEnumerable)base.DataSource; } else if (base.DataSource is System.Data.DataView) { DataView data = (DataView)DataSource; if (this.SortBy != null && data.Table.Columns.Contains(this.SortBy)) { data.Sort = this.SortBy; } pds.DataSource = data.Table.Rows; } else if (base.DataSource is System.Data.DataTable) { DataTable data = (DataTable)DataSource; if (this.SortBy != null && data.Columns.Contains(this.SortBy)) { data.DefaultView.Sort = this.SortBy; } pds.DataSource = data.DefaultView; } else if (base.DataSource is System.Data.DataSet) { DataSet data = (DataSet)DataSource; if (base.DataMember != null && data.Tables.Contains(base.DataMember)) { if (this.SortBy != null && data.Tables[base.DataMember].Columns.Contains(this.SortBy)) { data.Tables[base.DataMember].DefaultView.Sort = this.SortBy; } pds.DataSource = data.Tables[base.DataMember].DefaultView; } else if (data.Tables.Count > 0) { if (this.SortBy != null && data.Tables[0].Columns.Contains(this.SortBy)) { data.Tables[0].DefaultView.Sort = this.SortBy; } pds.DataSource = data.Tables[0].DefaultView; } else { throw new Exception("DataSet doesn't have any tables."); } } else if (base.DataSource == null) { // don't do anything? } else { throw new Exception("DataSource must be of type System.Collections.IEnumerable. The DataSource you provided is of type " + base.DataSource.GetType().ToString()); } if (pds != null && base.DataSource != null) { //Make sure that the page doesn't exceed the maximum number of pages //available if (this.CurrentPageNumber >= pds.PageCount) { this.CurrentPageNumber = pds.PageCount - 1; } //Set up paging values... btmBar.CurrentPage = topBar.CurrentPage = pds.CurrentPageIndex = this.CurrentPageNumber; this._currentProperties.numOfPages = btmBar.NumberOfPages = topBar.NumberOfPages = pds.PageCount; base.DataSource = pds; } } public override object DataSource { get { return base.DataSource; } set { //init(); //reset paging/sorting values since we've potentially changed data sources. base.DataSource = value; pageDataSource(); } } protected override void Render(HtmlTextWriter writer) { topBar.RenderControl(writer); base.Render(writer); btmBar.RenderControl(writer); } [Serializable] protected struct CurrentProperties { public int pageNum; public int itemsPerPage; public int numOfPages; public string sortBy; public bool sortDir; } protected CurrentProperties _currentProperties = new CurrentProperties(); protected override object SaveControlState() { return this._currentProperties; } protected override void LoadControlState(object savedState) { this._currentProperties = (CurrentProperties)savedState; } [Category("Status")] [Browsable(true)] [NotifyParentProperty(true)] [DefaultValue("")] [Localizable(false)] public string SortBy { get { return this._currentProperties.sortBy; } set { //If sorting by the same column, swap the sort direction. if (this._currentProperties.sortBy == value) { this.SortAscending = !this.SortAscending; } else { this.SortAscending = true; } this._currentProperties.sortBy = value; } } [Category("Status")] [Browsable(true)] [NotifyParentProperty(true)] [DefaultValue(true)] [Localizable(false)] public bool SortAscending { get { return this._currentProperties.sortDir; } set { this._currentProperties.sortDir = value; } } [Category("Status")] [Browsable(true)] [NotifyParentProperty(true)] [DefaultValue(25)] [Localizable(false)] public int ItemsPerPage { get { return this._currentProperties.itemsPerPage; } set { this._currentProperties.itemsPerPage = value; } } [Category("Status")] [Browsable(true)] [NotifyParentProperty(true)] [DefaultValue(1)] [Localizable(false)] public int CurrentPageNumber { get { return this._currentProperties.pageNum; } set { this._currentProperties.pageNum = value; pageDataSource(); } } }

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  • Sort Dictionary<> on value, lookup index from key

    - by paulio
    Hi, I have a Dictionary< which I want to sort based on value so I've done this by putting the dictionary into a List< then using the .Sort method. I've then added this back into a Dictionary<. Is it possible to lookup the new index/order by using the Dictionary key?? Dictionary<int, MyObject> toCompare = new Dictionary<int, MyObject>(); toCompare.Add(0, new MyObject()); toCompare.Add(1, new MyObject()); toCompare.Add(2, new MyObject()); Dictionary<int, MyObject> items = new Dictionary<int, MyObject>(); List<KeyValuePair<int, MyObject>> values = new List<KeyValuePair<int, MyObject>> (toCompare); // Sort. values.Sort(new MyComparer()); // Convert back into a dictionary. foreach(KeyValuePair<int, PropertyAppraisal> item in values) { // Add to collection. items.Add(item.Key, item.Value); } // THIS IS THE PART I CAN'T DO... int sortedIndex = items.GetItemIndexByKey(0);

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  • Python - help on custom wx.Python (pyDev) class

    - by Wallter
    I have been hitting a dead end with this program. I am trying to build a class that will let me control the BIP's of a button when it is in use. so far this is what i have (see following.) It keeps running this weird error TypeError: 'module' object is not callable - I, coming from C++ and C# (for some reason the #include... is so much easier) , have no idea what that means, Google is of no help so... I know I need some real help with sintax and such - anything woudl be helpful. Note: The base code found here was used to create a skeleton for this 'custom button class' Custom Button import wx from wxPython.wx import * class Custom_Button(wx.PyControl): # The BMP's # AM I DOING THIS RIGHT? - I am trying to get empty 'global' # variables within the class Mouse_over_bmp = None #wxEmptyBitmap(1,1,1) # When the mouse is over Norm_bmp = None #wxEmptyBitmap(1,1,1) # The normal BMP Push_bmp = None #wxEmptyBitmap(1,1,1) # The down BMP Pos_bmp = wx.Point(0,0) # The posisition of the button def __init__(self, parent, NORM_BMP, PUSH_BMP, MOUSE_OVER_BMP, pos, size, text="", id=-1, **kwargs): wx.PyControl.__init__(self,parent, id, **kwargs) # The conversions, hereafter, were to solve another but. I don't know if it is # necessary to do this since the source being given to the class (in this case) # is a BMP - is there a better way to prevent an error that i have not # stumbled accost? # Set the BMP's to the ones given in the constructor self.Mouse_over_bmp = wx.Bitmap(wx.Image(MOUSE_OVER_BMP, wx.BITMAP_TYPE_ANY).ConvertToBitmap()) self.Norm_bmp = wx.Bitmap(wx.Image(NORM_BMP, wx.BITMAP_TYPE_ANY).ConvertToBitmap()) self.Push_bmp = wx.Bitmap(wx.Image(PUSH_BMP, wx.BITMAP_TYPE_ANY).ConvertToBitmap()) self.Pos_bmp = self.pos self.Bind(wx.EVT_LEFT_DOWN, self._onMouseDown) self.Bind(wx.EVT_LEFT_UP, self._onMouseUp) self.Bind(wx.EVT_LEAVE_WINDOW, self._onMouseLeave) self.Bind(wx.EVT_ENTER_WINDOW, self._onMouseEnter) self.Bind(wx.EVT_ERASE_BACKGROUND,self._onEraseBackground) self.Bind(wx.EVT_PAINT,self._onPaint) self._mouseIn = self._mouseDown = False def _onMouseEnter(self, event): self._mouseIn = True def _onMouseLeave(self, event): self._mouseIn = False def _onMouseDown(self, event): self._mouseDown = True def _onMouseUp(self, event): self._mouseDown = False self.sendButtonEvent() def sendButtonEvent(self): event = wx.CommandEvent(wx.wxEVT_COMMAND_BUTTON_CLICKED, self.GetId()) event.SetInt(0) event.SetEventObject(self) self.GetEventHandler().ProcessEvent(event) def _onEraseBackground(self,event): # reduce flicker pass def _onPaint(self, event): dc = wx.BufferedPaintDC(self) dc.SetFont(self.GetFont()) dc.SetBackground(wx.Brush(self.GetBackgroundColour())) dc.Clear() dc.DrawBitmap(self.Norm_bmp) # draw whatever you want to draw # draw glossy bitmaps e.g. dc.DrawBitmap if self._mouseIn: # If the Mouse is over the button dc.DrawBitmap(self, self.Mouse_over_bmp, self.Pos_bmp, useMask=False) if self._mouseDown: # If the Mouse clicks the button dc.DrawBitmap(self, self.Push_bmp, self.Pos_bmp, useMask=False) Main.py import wx import Custom_Button from wxPython.wx import * ID_ABOUT = 101 ID_EXIT = 102 class MyFrame(wx.Frame): def __init__(self, parent, ID, title): wxFrame.__init__(self, parent, ID, title, wxDefaultPosition, wxSize(400, 400)) self.CreateStatusBar() self.SetStatusText("Program testing custom button overlays") menu = wxMenu() menu.Append(ID_ABOUT, "&About", "More information about this program") menu.AppendSeparator() menu.Append(ID_EXIT, "E&xit", "Terminate the program") menuBar = wxMenuBar() menuBar.Append(menu, "&File"); self.SetMenuBar(menuBar) self.Button1 = Custom_Button(self, parent, -1, "D:/Documents/Python/Normal.bmp", "D:/Documents/Python/Clicked.bmp", "D:/Documents/Python/Over.bmp", wx.Point(200,200), wx.Size(300,100)) EVT_MENU(self, ID_ABOUT, self.OnAbout) EVT_MENU(self, ID_EXIT, self.TimeToQuit) def OnAbout(self, event): dlg = wxMessageDialog(self, "Testing the functions of custom " "buttons using pyDev and wxPython", "About", wxOK | wxICON_INFORMATION) dlg.ShowModal() dlg.Destroy() def TimeToQuit(self, event): self.Close(true) class MyApp(wx.App): def OnInit(self): frame = MyFrame(NULL, -1, "wxPython | Buttons") frame.Show(true) self.SetTopWindow(frame) return true app = MyApp(0) app.MainLoop() Errors (and traceback) /home/wallter/python/Custom Button overlay/src/Custom_Button.py:8: DeprecationWarning: The wxPython compatibility package is no longer automatically generated or actively maintained. Please switch to the wx package as soon as possible. I have never been able to get this to go away whenever using wxPython any help? from wxPython.wx import * Traceback (most recent call last): File "/home/wallter/python/Custom Button overlay/src/Main.py", line 57, in <module> app = MyApp(0) File "/usr/lib/python2.6/dist-packages/wx-2.8-gtk2-unicode/wx/_core.py", line 7978, in __init__ self._BootstrapApp() File "/usr/lib/python2.6/dist-packages/wx-2.8-gtk2-unicode/wx/_core.py", line 7552, in _BootstrapApp return _core_.PyApp__BootstrapApp(*args, **kwargs) File "/home/wallter/python/Custom Button overlay/src/Main.py", line 52, in OnInit frame = MyFrame(NULL, -1, "wxPython | Buttons") File "/home/wallter/python/Custom Button overlay/src/Main.py", line 32, in __init__ wx.Point(200,200), wx.Size(300,100)) TypeError: 'module' object is not callable I have tried removing the "wx.Point(200,200), wx.Size(300,100))" just to have the error move up to the line above. Have I declared it right? help?

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  • Nails vs Screws (C# List vs Dictionary)

    - by MarkPearl
    General This may sound like a typical noob statement, but I’m finding out in a very real way that just because you have a solution to a problem, doesn’t necessarily mean it is the best solution. This was reiterated to me when a friend of mine suggested I look at using Dictionaries instead of Lists for a particular problem – he was right, I have always just assumed that because lists solved my problem I did not need to look elsewhere. So my new manifesto to counter this ageless problem is as follows… Look for a solution that will logically work Once you have a solution look for possible alternatives Decide why your current solution is the best approach compared to the alternatives If it is.. use it till something better comes along, if it isnt…. change What’s the difference between Lists & Dictionaries Both lists and dictionaries are used to store collections of data. Assume we had the following declarations… var dic = new Dictionary<string, long>(); var lst = new List<long>(); long data;   With a list, you simply add the item to the list and it will add the item to the end of the list. lst.Add(data); With a dictionary, you need to specify some sort of key and the data you want to add so that it can be uniquely identified. dic.Add(uniquekey, data);   Because with a dictionary you now have unique identifier, in the background they provide all sort’s of optimized algorithms to find your associated data. What this means is that if you are wanting to access your data it is a lot faster than a List. So when is it appropriate to use either class? For me, if I can guarantee that each item in my collection will have a unique identifier, then I will use Dictionaries instead of Lists as there is a considerable performance benefit when accessing each data item. If I cannot make this sort of guarantee, then by default I will use a list. I know this is all really basic, and I hope I haven’t missed some fundamental principle… If anyone would like to add their 2 cents, please feel free to do so…

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  • Assigning an item to an existing array in a list within a dictionary [on hold]

    - by Rouke
    I have a Dictionary declared like: public var PoolDict : Dictionary.<String, List.<GameObject[]> >; I made a function to add items to the list and array function Add(key:String, obj:GameObject) { if(!PoolDict.ContainsKey(key)) { PoolDict[key] = new List.<GameObject[]>(); } //PlaceHolder - Not what will be in final version PoolDict[key].Add(null); //Attempts - Errors- How to add to existing array? PoolDict[key].Add(obj); PoolDict[key][0].Add(obj); } I'd like to replace the line after //PlaceHolder with code that will assign a gameObject to an existing array in a list that's associated with a key. How could this be done?

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  • C#: Is it possible to use expressions or functions as keys in a dictionary?

    - by Svish
    Would it work to use Expression<Func<T>> or Func<T> as keys in a dictionary? For example to cache the result of heavy calculations. For example, changing my very basic cache from a different question of mine a bit: public static class Cache<T> { // Alternatively using Expression<Func<T>> instead private static Dictionary<Func<T>, T> cache; static Cache() { cache = new Dictionary<Func<T>, T>(); } public static T GetResult(Func<T> f) { if (cache.ContainsKey(f)) return cache[f]; return cache[f] = f(); } } Would this even work? Edit: After a quick test, it seems like it actually works. But I discovered that it could probably be more generic, since it would now be one cache per return type... not sure how to change it so that wouldn't happen though... hmm Edit 2: Noo, wait... it actually doesn't. Well, for regular methods it does. But not for lambdas. They get various random method names even if they look the same. Oh well c",)

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  • How to refer to items in Dictionary<string, string> by integer index?

    - by Edward Tanguay
    I made a Dictionary<string, string> collection so that I can quickly reference the items by their string identifier. But I now also need to access this collective by index counter (foreach won't work in my real example). What do I have to do to the collection below so that I can access its items via integer index as well? using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace TestDict92929 { class Program { static void Main(string[] args) { Dictionary<string, string> events = new Dictionary<string, string>(); events.Add("first", "this is the first one"); events.Add("second", "this is the second one"); events.Add("third", "this is the third one"); string description = events["second"]; Console.WriteLine(description); string description = events[1]; //error Console.WriteLine(description); } } }

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