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• UIImage color changing?

  - by senthilmuthu

  hi, how can i change the UIImage's Color through Programming,any help pls?if i send UIImage, its color must be changed ..any help please? if i change rgb color like the following through bitmaphandling it did not work.i have given blackcolor's RGB value like 0,0,0.....

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• Qt: Background color on QStandardItem using StyleSheet

  - by Johan

  Hi I have a class that inherits QStandardItem and I put the elements in a QTreeWidget. The class receive notifications from the outside and I want to change the background color of the item based on what happened. If I do not use stylesheets it works just fine, like this: void myClass::onExternalEvent() { setBackground(0, QColor(255,0,0))); } However as soon as I put a stylesheet on the QTreeWidget this has no effect, the stylesheet seems to override the setBackground call. So I tried : void myClass::onExternalEvent() { this-setStyleSheet("background-color: red"); } but this is probably all wrong, it changed the color of some other element on my screen, not sure why. So anyone have an idea on how I can alter the background color like with setBackgroundColor but still be able to use stylesheet on my QTreeWidget?

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• Freehand drawing with Quartz 2D

  - by qutaibah

  I am trying to develop a simple freehand-drawing app for red-marking some of my images. Below is a method that is called from within the drawRect. I want to ask if there is a way to avoid add the path every time the path is redrawn? Also, the way the draw method is set up, the drawing gets a bit slow and choopy after a few seconds. How can I improve the smoothness of the drawn path? thanks -(void)freehandDraw:(CGContextRef)context inRect:(CGRect)rect { CGPathAddLineToPoint( path, NULL, drawTip.x, drawTip.y); CGContextAddPath( context, path); CGContextStrokePath(context); } // method

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• Android drawing cache

  - by Seva Alekseyev

  Please explain how does the drawing cache work in Android. I'm implementing a custom View subclass. I want my drawing to be cached by the system. In the View constructor, I call setDrawingCacheEnabled(true); Then in the draw(Canvas c), I do: Bitmap cac = getDrawingCache(); if(cac != null) { c.drawBitmap(cac, 0, 0, new Paint()); return; } Yet the getDrawingCache() returns null to me. My draw() is not called neither from setDrawingCacheEnabled(), nor from getDrawingCache(). Please, what am I doing wrong?

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• Java2d: JPanel set background color not working

  - by Algorist

  I am having the below code. public VizCanvas(){ { this.setBackground(Color.black); this.setSize(400,400); } } It worked fine and displays the panel in black background. But when I implement the paint method, which does nothing, the color changes to default color i.e gray. I tried to set graphics.setColor() but it didn't help. Thank you.

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• Use jQuery to find div by background color

  - by maxsilver

  I'm trying to use jQuery to find the number of divs that are both visible, and have a background color of Green. (Normally I'd just add a class to the div, style it green, and check for that class in jQuery but in this instance, I can't actually change the markup of the page itself in any way) I currently have the visible div part working as : if( // if there are more than one visible div $('div.progressContainer:visible').length > 0 ){ I'd like to throw some kind of "and background color is green" selector in there. // not legit javascript if( // if there are more than one visible div, and its color is green $('div.progressContainer:visible[background-color:green]').length > 0 ){ Is it possible to do this?

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• Drawing the call stack in a recursive method

  - by Shaza

  Hey, I want to draw the call stack for any recursive method, so I've created a schema like this, recursiveMethod(){ //Break recursion condition if(){ // Add value here to the return values' list- No drawing return } else{ //Draw stack with the value which will be pushed to the stack here variable <- recursiveMethod() //Clear the drawing which represents the poped value from the stack here return variable }} Notes: This schema can draw recursive methods with n recursive call by making the recursive calls in a separate return statements. returnValues list, is a list which save all the return values, just for viewing issues. What do you think of this? any suggestions are extremely welcomed.

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• Vertex Buffer Object not drawing in SDL window

  - by intregus

  I'm just using the opengl SDL template with Xcode, and everything runs fine. I removed the Atlantis code, and changed the main extension to .mm, then added some testing code to drawGL. Drawing a simple triangle (using immediate mode) at this point inside drawGL gives me a white triangle, but when I add the code to draw using a vertex buffer object, i just get a black window. Here is my VBO drawing code: glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // Clear The Screen And The Depth Buffer glLoadIdentity(); GLuint buffer; float vertices[] = { 0.0f, 1.0f, 0.0f, -1.0f,-1.0f, 0.0f, 1.0f,-1.0f, 0.0f }; // VBO doesn't work :( glGenBuffers(1, &buffer); glBindBuffer(GL_ARRAY_BUFFER, buffer); glBufferData(GL_ARRAY_BUFFER, sizeof(float) * 9, vertices, GL_STATIC_DRAW); glEnableClientState(GL_VERTEX_ARRAY); glVertexPointer(3, GL_FLOAT, 0, vertices); glDrawArrays(GL_TRIANGLES, 0, 3); glDisableClientState(GL_VERTEX_ARRAY);

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• Calculating the average color between two colors in PHP, using an index number as reference value

  - by Roel Krottje

  Hi all! In PHP, I am trying to calculate the average color (in hex) between to different hex colors.. However, I also need to be able to supply an index number between 0.0 and 1.0. So for example: I have $color1 = "#ffffff" and $color2 = "#0066CC" .. If I would write a function to get the average color and I would supply 0.0 as the index number, the function would need to return "#ffffff". If I would supply 1.0 as the index number, the function would need to return "#0066CC".. However if I would supply 0.2, the function would need to return an average color between the two colors, but still closer to color1 than to color2.. If I would supply index number 0.5, I would get the exact average color of both colors.. I have been trying to accomplish this for several days now but I can't seem to figure it out..! Any help would therefor be greatly appreciated!.. Thanks!

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• HTML <select> selected option background-color CSS style

  - by arieltools

  Is there a style for a select option's "selected" color? For example: <HTML> <BODY> <FORM NAME="form1"> <SELECT NAME="mySelect" SIZE="7" style="background-color:red;"> <OPTION>Test 1 <OPTION>Test 2 <OPTION>Test 3 <OPTION>Test 4 <OPTION>Test 5 <OPTION>Test 6 <OPTION>Test 7 </SELECT> </FORM> </BODY> </HTML> When I select an option it turns blue, I want to override this and make it a different color. In the style I expected something like "selected-color", but it doesn't exist.

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• Set the Background Color for JTabbedPane

  - by Ram

  I am using Nimbus Look and feel. I needs to change the Background color and foreground color of the JTabbedPane but the color doesn't set in JTabbedPane. I tried setForeground(), setForegroundAt(), setBackground() and setBackgroundAt() methods but it isnt works.

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• Graph coloring Algorithm

  - by Amitd

  From wiki In its simplest form, it is a way of coloring the vertices of a graph such that no two adjacent vertices share the same color; this is called a vertex coloring. Similarly, an edge coloring assigns a color to each edge so that no two adjacent edges share the same color, and a face coloring of a planar graph assigns a color to each face or region so that no two faces that share a boundary have the same color. Given 'n' colors and m vertices, how easily can a graph coloring algorithm be implemented? Lan

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• Can not change UILabel text color

  - by HelloWorld

  Hi, all I want to chang UILabel text color,but can't change it's color,This is my code. UILabel *categoryTitle = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 46, 16)]; categoryTitle.text = @"abc"; categoryTitle.backgroundColor = [UIColor clearColor]; categoryTitle.font = [UIFont systemFontOfSize:12]; categoryTitle.textAlignment = UITextAlignmentCenter; categoryTitle.adjustsFontSizeToFitWidth = YES; categoryTitle.textColor = [UIColor colorWithRed:188 green:149 blue:88 alpha:1.0]; [self.view addSubview:categoryTitle]; [categoryTitle release]; The label text color is white ,not my custome color. Thank for any help.

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• How to get the application font color in Qt

  - by Solitaire

  Hi, I want to put some text on my UI, I am drawing the text in paint event of a widget using painter.. Here is the sample code, which shows how I am drawing the text.. QWidget::paintEvent(painter); QPainter paint(this); paint.drawText(QPoint(10,30),"Duplex"); but, the text color is looks like the default theme color, how to set the application font color to the text in paint event.. Thanks

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• over Windows terminal change cursor width or color in Vim depending on mode

  - by INTPnerd

  I am using PuTTY to connect over SSH to an Ubuntu server from my Windows 7 workstation. Once connected I am using the Vim installation from the Ubuntu server to edit files. I want the cursor to change when I go into and out of insert mode. Part of my .vimrc file is like this but it is not changing the cursor: if &term =~ "xterm" echo "xTerm!!inate!" let &t_SI = "\<Esc>]12;purple\x7" let &t_EI = "\<Esc>]12;blue\x7" endif I know that the if statement is executing because of the echo. EDIT: Actually I would prefer to change the cursor to be a vertical line like you can in the PuTTY settings rather than change the color, or maybe even do both. But just changing the color would be a lot better than nothing. Also I am willing to change terminals if there is another Windows 7 Professionsal 64 bit compatible terminal that can do this (preferably something free). Maybe Poderosa can do this?

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• Genertate random color hex in Objective-C ?

  - by Nick Brooks

  How do I generate a random color hexadecimal in Objective-C ? I need a color hexdecimal , I don't need a random color. It is complicated ...

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• Actionscript 3: foreach drawing object in movieclip

  - by Mathias

  Hey, I got a europe map designed in flash (1 movieclip, 1 frame, really simple), which contains the map as drawing objects directly inside the scene and in addition some specific countries as clickable buttons. So far it's working fine. What I need now is to make all the other drawing objects clickable without having to edit and script each object. I'm thinking about something like this (pseudo code): foreach(obj in MovieClip) { if(obj !typeof(Button)) { obj.addEventListener(MouseEvent.MOUSE_DOWN, genericClickListener); } } I just don't know the syntax how to achieve that. Could anybody give me a hint? Thanks, Mathias

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• change UIbutton color inside UITableViewCell

  - by KK

  I have a simple problem ... but its turning into a very difficult problem .. i have a button inside uitableviewcell and want to change its color through code .... i could aceive it by changing its background image. But its kinna hazy ... its not the solid color ... and when i use [cell.button setBackgroundColor:[UIcolor redColor]] ... the button color does not change ... any help appreciated thanks

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• How to change font color inside nav element?

  - by user2924752

  I have a element and I want to change the color of the links within it, but all other links on my page are styled using the following CSS: a:link { color:#22b14c; text-decoration:none; } and here is the nav: <nav id="Nav"> <a href="index.html">Home</a> | <a href="Gallery.html">Library</a> | <a href="Contact.html">Contact</a> | <a href="About.html">About</a> </nav> and the nav css: #Nav { margin-top: 20px; background-color: #000000; color: #f2f2f2; font-size: 40px; font-family: "Calibri"; text-align: center; } I tried a span inside the nav element but that didn't work. How can I change the color for these links only inside the element?

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• Color Temperature in PowerPoint 2010

  - by Otaku

  I'm teaching PowerPoint 2010 and it's got some great new features. Unfortunately, one that I can't wrap my head around is the the new "Color Temperature" feature for pictures. I do understand color temperature in general (i.e. the lower the number, the "colder"/"oranger" - the higher the number, the "hotter"/"bluer"). The way PowerPoint implements it seems opposite from most other programs - like Photo Filter in Photoshop. So I need to understand what this feature is in more detail so I can explain it to my students. Does anyone know?

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• WPF Style: how to change GradientStop Color in Trigger

  - by Nike

  I have a Button Style: <Style x:Key="ButtonStyle1" TargetType="{x:Type Button}"> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type Button}"> <Grid> <Path x:Name="path1" ... Data="...some data..."> <Path.Fill> <LinearGradientBrush EndPoint="0.5,-0.3" StartPoint="0.5,0.8"> <GradientStop x:Name="gs1" Color="Green" Offset="0.44"/> <GradientStop Color="Black" Offset="0.727"/> </LinearGradientBrush> </Path.Fill> </Path> <ContentPresenter ...properties... /> </Grid> <ControlTemplate.Triggers> <Trigger Property="IsMouseOver" Value="True"> <Setter TargetName="???" Property="Color" Value="Green"></Setter> </Trigger> </ControlTemplate.Triggers> </ControlTemplate> </Setter.Value> I want to change the Color of GradientStop with x:Name="gs1" when mouse is over button, so I use Trigger IsMouseOver. How can i get an access to Color Property in Trigger? I tried TargetName="path1.gs1" but it doesn't work. Any idea?

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• Random Color generator in Javascript

  - by n00ki3

  Hi there, i am not an Javascript and i need a little help. Given this function , i want to replace the color with an Random Color generator. document.overlay = GPolyline.fromEncoded({color: "#0000FF", weight: 10, points: encoded_points, zoomFactor: 32, levels: encoded_levels, numLevels: 4 }); Can anyone help me ?

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• How to judge the color of UILabel?

  - by william-hu

  UILabel *templabel = [self.wallBoxArray objectAtIndex:i]; for( int i = 0 ; i < [self.wallBoxArray count]; i++) { if(templabel.backgroundColor == [UIColor greenColor]) { NSLog(@"the color isn green"); } } There are many label's in my array. They all initialized with green color. But i judged that way ,why cant print " the color isn't green.Thank you.

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• Setting System.Drawing.Color through COM. Interop

  - by user58909

  I am trying to use Aspose.Words library through COM Interop. There is one critical problem: I cannot set color. It is supposed to work by assigning to DocumentBuilder.Font.Color, but when I try to do it I get OLE error 0x80131509. My problem is pretty much like this one: http://bit.ly/cuvWfc

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• changing button tag border color

  - by rashmi

  dear all, i have loaded image in border less button tag when button is selected with tab key i get brown color rectangle around image. how do i change color of that rectangle from brown to white. and is that possible to have white rectangle with inner and outer shadow of rectangle with blue. please help. here is my code snippet. <td align=center valign=middle > <figure> <button style="background-color:black; height:160px;width:160px ; border:none"><img src="F:\rashmi\icons_tv\Help_Normal.png" > </button> <figcaption><font size="5" color="white" style="font-weight:bold"><center>help</center></font></figcaption> </figure> </td>

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