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  • Put MFC CDialog in a WPF form

    - by splintor
    Hi, We are porting an MFC application to WPF, and will probably won't have time to port the entire application. The MFC app has many CDialog-based windows, and we are thinking of leaving some of these windows in MFC, and show them inside a WPF window, so we can control their modality from WPF. Is there an easy way to accomplish that? If not, can you recommend another way to handle this? thanks, splintor

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  • wpf and win32 overlapping issue

    - by priya-hatipkar
    I have a wpf Window, which has wpf control and windows forms control hosted in WindowsFormsHost. The expected behavior is that the WPF control should be rendered on top of WindowsFormsHost. Unfortunately, this is a limitation in the interop story, WindowsFormsHost elements are always drawn on top, and don't get affected by z-order. http://msdn.microsoft.com/en-us/library/ms742522.aspx Is there any workaround to solve this problem? Regards, Priya

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  • Setting the datasource of a WPF Grid

    - by Ben
    Hi, I'm very new to WPF, and am trying to set the datasource (which the WPF Grid doesn't have as a property) of my grid to take a List. Does anyone have any code examples of how to do this. I have googled it, but can't find any really good examples. (Oh, and can anyone suggest a good site for all round WPF Code examples?) Thanks

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  • How to deal with calculated values with Dependency Properties on a custom WPF control

    - by jpierson
    To summarize what I'm doing, I have a custom control that looks like a checked listbox and that has two dependency properties one that provides a list of available options and the other that represents a enum flag value that combines the selection options. So as I mentioned my custom control exposes two different DependencyProperties, one of which is a list of options called Options and the other property called SelectedOptions is of a specific Enum type that uses the [Flags] attribute to allow combinations of values to be set. My UserControl then contains an ItemsControl similar to a ListBox that is used to display the options along with a checkbox. When the check box is checked or unchecked the SelectedOptions property should be updated accordingly by using the corresponding bitwise operation. The problem I'm experiencing is that I have no way other than resorting to maintaining private fields and handling property change events to update my properties which just feels unatural in WPF. I have tried using ValueConverters but have run into the problem that I can't really using binding with the value converter binding so I would need to resort to hard coding my enum values as the ValueConverter parameter which is not acceptable. If anybody has seen a good example of how to do this sanely I would greatly appreciate any input. Side Note: This has been a problem I've had in the past too while trying to wrap my head around how dependency properties don't allow calculated or deferred values. Another example is when one may want to expose a property on a child control as a property on the parent. Most suggest in this case to use binding but that only works if the child controls property is a Dependency Property since placing the binding so that the target is the parent property it would be overwritten when the user of the parent control wants to set their own binding for that property.

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  • WPF Image Viewer sample applications

    - by Harsha
    Hello all, I am new to WPF and just started learning WPF. I am looking for WPF Image viewer sample applications with brightness/Contrast, Zoom, Rotate, etc.. If you come accross such application please post the link. Thank you, Harsha T

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  • WPF animation/UI features performance and benchmarking

    - by Rich
    I'm working on a relatively small proof-of-concept for some line of business stuff with some fancy WPF UI work. Without even going too crazy, I'm already seeing some really poor performance when using a lot of the features that I thought were the main reason to consider WPF for UI building in the first place. I asked a question on here about why my animation was being stalled the first time it was run, and at the end what I found was that a very simple UserControl was taking almost half a second just to build its visual tree. I was able to get a work around to the symptom, but the fact that it takes that long to initialize a simple control really bothers me. Now, I'm testing my animation with and without the DropShadowEffect, and the result is night and day. A subtle drop shadow makes my control look so much nicer, but it completely ruins the smoothness of the animation. Let me not even start with the font rendering either. The calculation of my animations when the control has a bunch of gradient brushes and a drop shadow make the text blurry for about a full second and then slowly come into focus. So, I guess my question is if there are known studies, blog posts, or articles detailing which features are a hazard in the current version of WPF for business critical applications. Are things like Effects (ie. DropShadowEffect), gradient brushes, key frame animations, etc going to have too much of a negative effect on render quality (or maybe the combinations of these things)? Is the final version of WPF 4.0 going to correct some of these issues? I've read that VS2010 beta has some of these same issues and that they are supposed to be resolved by final release. Is that because of improvements to WPF itself or because half of the application will be rebuilt with the previous technology?

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  • WPF in an MMC snapin

    - by Jason Hocker
    Can someone provide some sample code for using WPF in a custom MMC snapin? I'm new to WPF, and I've understood the samples for writing MMC snapins, but I do not understand how to choose WPF instead of Winforms.

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  • WPF: Same line drawn different?

    - by stefan.at.wpf
    Hello, I have a canvas and in it I'm drawing some lines: for (int i = 1; i >= 100; i++) { // Line LineGeometry line = new LineGeometry(); line.StartPoint = new Point(i * 100, 0); line.EndPoint = new Point(i * 100, 100 * 100); // Path Path myPath = new Path(); myPath.Stroke = Brushes.Black; myPath.StrokeThickness = 1; // Add to canvas myPath.Data = line; canvas1.Children.Add(myPath); } Well, nothing special, but it makes problems - the lines are drawn different! The canvas is inside a scrollviewer, the following image shows different positions of the canvas, however the lines should look the same? Hell, how is this possible? The code above is the only code I've written by hand and it's the only content in the canvas. Anyone knows why this happens and how to prevent this? Thank you very much! Screenshot: http://www.imagebanana.com/view/c01nrd6i/lines.png

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  • WPF DataTemplate - Overlay

    - by David Ward
    I have a class that I need to provide the datatemplate for. Currently I have two datatemplates, one for when Enabled == true and one for when Enabled == false. The datatemplate for the class is actually the one below which changes the template used based on a trigger: <DataTemplate x:Key="ActionNodeTemplateSelector"> <ContentPresenter Content="{Binding}" Name="cp" /> <DataTemplate.Triggers> <DataTrigger Binding="{Binding Enabled}" Value="True"> <Setter TargetName="cp" Property="ContentTemplate" Value="{StaticResource ActionNodeTemplate}" /> </DataTrigger> <DataTrigger Binding="{Binding Enabled}" Value="False"> <Setter TargetName="cp" Property="ContentTemplate" Value="{StaticResource ActionNodeDisabledTemplate}" /> </DataTrigger> </DataTemplate.Triggers> </DataTemplate> This all works well. However, now I want to also display an image overlay if the "Completed" property is true and a different image if it is incomplete. I could easily carry on using my approach to trigger on the Completed property as well but this would double the number of templates and feels wrong. Is there a way that I could have a trigger on my DataTemplate that will allow me to overlay the correct image over the existing template which is based on the Enabled property?

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  • Wpf: Tips for better performance

    - by viky
    I am working on a wpf application. In which I am working with a TreeView, each node represents different datatypes, these datatypes are having properties defined and using data template to show their properties. My application reads from xml and create tree accordingly. My problem is that when I load it, it is too slow, I want to know about the tricks that will help me to improve performance of my(any) wpf application. Edit: Please provide me some tips for better performance in wpf!! I am using wpf Profiler but it is not much helpful for me.

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  • WPF User Control is causing Out of Memory Exception

    - by Chairman Meow
    Looking for a free spell checking solution, I thought I was so smart in doing this but I guess not. I have created a windows form based application and I want the form to add a user specified amount of user controls (with textboxes) on to a panel. The user can then click some button and the controls on this panel are cleared and new ones are added. The user does something and the process is repeated. Now, I wanted these textboxes to support spell checking and looked all over for a free solution. WPF textboxes support spell checking where the ones in regular win forms do not. I thought I would be able to use these WPF textboxes by adding them to an ElementHost object which is, in turn, within a panel. This panel would be a user control. So, in my application, I would be able to add instances of these user controls onto the form and make use of .NET's spell checking goodness. This actually worked but after using the application for a while, found that the application would eventually freeze on me due to out of memory errors. I have pinpointed the memory errors to these WPF controls since this problem does not happen with normal textboxes. When the window is opened and the number of controls is specified, this is pretty much how the controls are added: Dim xOffset As Integer = 0 For i As Integer = 0 To theNumber Dim myUserControl As New SpecialUserControl() myPanel.Controls.Add(myUserControl) myUserControl.Location = New Point(7, 7) myUserControl.Location = New Point(xOffset, 7) xOffset = xOffset + 207 Next Note that: myPanel is a panel on a form SpecialUserControl is the user control with WPF textbox (within an ElementHost object) When the user pressed a button, the panel is cleared: myUserControl.Controls.Clear() The user can then repeat the process. There are a lot of results on the internet when I tried to find a solution and I'm thinking that the problem I am having is due to the fact that the WPF control is not going away even after clearing the panel. Following this conclusion, I have tried different solutions regarding disposing these controls or setting them to nothing but the memory problem keeps occurring. If someone could give me some advice or ideas here, I'd really appreciate it.

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  • WPF: Combine Geometries / Canvas for Geometries?

    - by stefan.at.wpf
    Hello, I have 2 geometries A and B which I'd like to combine like shown at the end of the following drawing: http://www.imagebanana.com/view/9vm6zoy/geocombine.png How could one do this? Is there something like a "virtual canvas for geometries" where I can place A and B, move B accordingly and then get a geometrie from this? Thanks for any hint!

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  • wpf display staggered content

    - by Chris Cap
    I am trying to display a rather dynamic list of data in WPF. I have essentially a LineItem class that contains a list of strings and a line type. The line type separates different categories of line items. All line items with the same type should be displayed the same and their data should line up. For example, this list will contain an order summary. And the there will be a line type that represents something with a width and height. The width and height must line up vertically. However, there may be other line types that don't have to line up vertically. I want to produce a table similar to what you see below: ------------------------------------------------------------------ | some content here | some more content here | last content here | |----------------------------------------------------------------| | some content here | | last content here | |----------------------------------------------------------------| | spanning content that is longer then most | last content here | |----------------------------------------------------------------| | some content that can span a really long distance | ------------------------------------------------------------------ I attempted to do this by creating ListView with a single column that had a datatemplate that contained a grid with a fixed number of fields and then bind to the Colspan value. Unfortunately, this didn't work. I ended up with incorrect or overlapping content anytime I tried to do a column span. Here's the XAML I was working with <ListView ItemsSource="{Binding}" > <ListView.View> <GridView> <GridViewColumn Header="Content"> <GridViewColumn.CellTemplate> <DataTemplate> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition /> <ColumnDefinition /> <ColumnDefinition /> </Grid.ColumnDefinitions> <TextBlock Grid.Column="0" Grid.ColumnSpan="{Binding Path=Tokens[0].ColumnSpan}" Text="{Binding Path=Tokens[0].Content}" ></TextBlock> <TextBlock Grid.Column="1" Grid.ColumnSpan="{Binding Path=Tokens[1].ColumnSpan}" Text="{Binding Path=Tokens[1].Content}" ></TextBlock> <TextBlock Grid.Column="2" Text="{Binding Path=Tokens[2].Content}"></TextBlock> </Grid> </DataTemplate> </GridViewColumn.CellTemplate> </GridViewColumn> </GridView> </ListView.View> And here's the classes I was binding to public class DisplayLine { public LineType Linetype { get; set; } public List<Token> Tokens { get; set; } public DisplayLine() { Tokens = new List<Token>(); } } public class Token { public string Content { get; set; } public bool IsEmpty { get { return string.IsNullOrEmpty(Content); } } public int ColumnSpan { get; set; } public Token() { ColumnSpan = 1; } } Does anyone have any suggestions of maybe a way of making this work. I may be taking the wrong approach. I'm trying to avoid any solutions where I explcitily build something in the code behind as I'm using the MVVM pattern so it has to be something that I can bind from exposed through the controller. My intial plan was to create a factory and separate classes that display the data differently based on type. However, I'm struggling coming up with a strategy for this using MVVM as I really can't just build something and display it. I have toyed with the idea of making some kind of UI service class that is injected, but it would still require some pretty detailed UI information from the controller to do it's work.

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  • WPF and windows tiling

    - by SwiftLion
    I have a WPF application that will always run on windows 7, it opens and displays in full-screen mode There is a button within WPF app that opens up Word I would like the WPF application on opening up Word to send a command to the operating system so that it tiles both the WPF application and the Word application windows side by side, so that they each take up 50% of screen each. Is this possible? if yes would anyone know what the code may be? ( a bit like when you right click on windows 7 task bar and click Show Windows Side by Side)

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  • selected checkbox in WPF

    - by deep
    Hai am having a lot of check box in my wpf form, i want to get the selected checkbox value alone. in winforms we can use foreach(checkbox ck in controls) like that, but i cannot use like that in WPF Forms, how can i get the selected checkbox in WPF FORMS ??

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  • The benefits and hassles of moving entirely to a WPF Project

    - by Ben
    Hi, I have a project that i started as a WinForms application as that was the format i was confortable with at the time. I have since started dabbling in WPF an introduced some WPF UserControls (mainly grids) into my project and absolutely love them. The question i have is, is there any real advantage to me changing the UI Project of my solution into a purely WPF project, and get rid of any WinForms? I am fully aware that each format suits a certain environment, and you wouldnt be able to give a definitive answer without knowing more of the details, but i would like to know peoples opinions, and if anyone has done a silimar thing of converting an existing WinForms App into a WPF frontend, and any observations they made in doing so. Thanks

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  • Appearance of a WPF ListView under Windows Vista and Windows XP is not the same

    - by rem
    In a WPF application I have a ListView: <ListView Name="ItemSelList" ItemsSource="{Binding ItemColl}" SelectionChanged="ItemSelList_SelectionChanged"> <ListView.View> <GridView> <GridViewColumn Header="Date" Width="90" DisplayMemberBinding="{Binding Date}"/> <GridViewColumn Header="Time" Width="90" DisplayMemberBinding="{Binding Time}"/> <GridViewColumn Header="Description" Width="250" DisplayMemberBinding="{Binding Description}"/> </GridView> </ListView.View> </ListView> When running application under Windows Vista, everything is OK. When running under Windows XP - the default font size of ListView's rows is too small and rows of the ListView don't change color when user hovers with a mouse over them. How to do so that ListView appearance under Windows XP is the same as under Vista?

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  • WPF: Create a dialog / prompt

    - by stefan.at.wpf
    Hello, I need to create a Dialog / Prompt including TextBox for user input. My problem is, how to get the text after having confirmed the dialog? Usually I would make a class for this which would save the text in a property. However I want do design the Dialog using XAML. So I would somehow have to extent the XAML Code to save the content of the TextBox in a property - but I guess that's not possible with pure XAML. What would be the best way to realize what I'd like to do? How to build a dialog which can be defined from XAML but can still somehow return the input? Thanks for any hint!

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