so if opengl can render to any hwnd...
May 09, 2005 12:18 PM
is it possible to render an gl window to any hwnd object? for example if you create a dialog box can you render to a rich edit box, static box, buttons, or custom controls?
11,263
May 09, 2005 12:32 PM
yes, provided you take over drawing of that object and initalise an OpenGL context on the hwnd in question
May 09, 2005 02:31 PM
so all i really need to do is
HDC hDC = GetDC(hWnd); //hWnd is the object
HDC hDC = GetDC(hWnd); //hWnd is the object
290
May 09, 2005 02:54 PM
As Phantom said, you'll also need a GL context, which can be created using wglCreateContext.
And of course you'll need to clean up when done. See the MSDN page linked above for more info.
-bodisiw
HDC hDC = GetDC(hWnd); //hWnd is the objectHGLRC hglrc = wglCreateContext (hDC);// set the newly created context to render to the windowwglMakeCurrent (hDC, hglrc);And of course you'll need to clean up when done. See the MSDN page linked above for more info.
-bodisiw
-bodisiw
May 10, 2005 01:47 AM
ok this is all starting to make sense now. im trying to make several different rendering areas. what do i only need one of for the entire program and what do need per area? i have a seperate HWND, DC, and RC. they all share the same pixelformatdescriptor. i know something isnt right because im not seeing anything in the box. here is some of my code:
this portion is under the WM_PAINT msg in the window's proc
this is under the WM_CLOSE msg:
i doubt this has anything to do with it but im trying to render to a static box (that is not disabled) inside of a dialog box.
this portion is under the WM_PAINT msg in the window's proc
HWND tWnd = GetDlgItem(hWnd, IDC_COL_PALETTE);RECT rect; GetClientRect(tWnd, ▭);DC = GetDC(tWnd);PixelFormat = ChoosePixelFormat(DC, &pfd);SetPixelFormat(DC, PixelFormat, &pfd);RC = wglCreateContext(DC);wglMakeCurrent(DC, RC);glViewport(0,0,rect.right - rect.left,rect.bottom - rect.top);glMatrixMode(GL_MODELVIEW);/****DRAW & INIT SCENE HERE****/this is under the WM_CLOSE msg:
ReSizeGLScene(AppWidth, AppHeight); //resets back to base app sizewglMakeCurrent(hDC, hRC);wglDeleteContext(RC);DestroyWindow(hWnd);i doubt this has anything to do with it but im trying to render to a static box (that is not disabled) inside of a dialog box.
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