not abe to change the background of the window ..

[arjit292]

I am not able to change the background of the window ...
i m using this code ...

window=[[UIWindow alloc] initWithFrame :[[UIScreen mainscreen] bounds]];
[window setbackgroundColor:[UIColor redColor]];

i tried changing each and every color but in stumilater its showing only black .. any help ...

[arjit292]

actually i am using the glpaint example and i wanna change the background which i am not able to do any idea how should i proceed ...

[ziconic]

Oooh this won't be easy. glpaint is an OpenGLES app, so you'd want to draw the background using OpenGLES. You could create a quad using 2 triangles and apply the background as a texture map, but perhaps there might be an easier way.

I think it's possible to overlay a transparent OpenGL view on top of a regular view, but you'll need to deal with the fact that OpenGL uses premultiplied alpha. I remember playing with this once but could never get it to work right. You're probably much better off doing all your compositing in OpenGL instead of a hybrid Quartz/OpenGL approach.

[yguler]

// set the background color to something COLD
self.drawingView.backgroundColor = [UIColor colorWithRed:0.5 green:0.5 blue:1.0 alpha:0];
add this code to Appcontroll.m