Hi, I'm trying to render the contents of a window, with desktop composition disabled, on an off-screen buffer. I have no control over the window and the only thing I have is the window handle and the DC. I thought about allocating an off-screen DC and doing something like:

/* The window handle is stored in the
hWnd variable and the offscreen DC,
is in hDC */
PostMessage(hWnd, WM_ERASEBKGND,
(WPARAM)hMemDC, 0);
PostMessage(hWnd, WM_PAINT, 0, 0);

But it doesn't seem to work. Please note that I don't want the application to render on the primary display DC. In other words I want to redirect it's graphical output, and blit the result in my window.

Finally found the solution myself. If anyone else is interested in that, the process is simple. You create a bitmap from the DC (there are many websites that describe this), and then you apply that BITMAP object as a texture, the way you'd apply any other bitmap texture.

It's a better idea to use the Win32 API Sleep() and SleepEx() functions for delaying instead of huge incremental loops:

VOID
Delay(INT iMilliseconds)
{
SleepEx(iMilliseconds, FALSE);
}

For more information check out: http://msdn.microsoft.com/en-us/library/windows/desktop/ms686307%28v=vs.85%29.aspx[^]

Hi, I'm trying to mix Device Contexts and OpenGL but not the usual way. I don't want to draw with GDI on top of an OpenGL scene. What I wanna do, is apply an HDC bitmap as a texture on an OpenGL polygon. I know that this is generally a bad idea, but if you know anything about how is that possible, you would be very helpful. I'm coding on C/C++ on Win32. A DirectX 8/9 solution would also be appreciated.

I'm also willing to help if you provide specific questions. :-)

Thanks

I have already developed the biggest part of the project, and it is named Pole OS, but I don't understand, how could the beta testers and the feedback help me reach a codename? And anyway, I've heard that some projects are initially developed without a name (like iOS). Any idea how is that? I mean, what do they show the user when they start up? The project site is: http://sites.google.com/site/fxpoleos/ Thanks for your help! :)

I'm currently looking for a codename for an operating system. I started with Pole OS, but I'm not sure if it's nice, and easy to remember. Also I came up with another codename, Prodane, but I'm not sure whether I should use it, as Prodane is not an actual word in any language. So, do you have any ideas? Please let me know. Also, If you can thing of a logo, you'd be very helpful.