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楼主 |
发表于 2009-1-5 04:17:00
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Re: 我只能放弃opengl了
一味地纠缠这些也没用了，这就是cfree的示例代码，代码很短也很简单，我想应该能很快找出问题所在，我希望你们帮我个忙，看看是什么原因导致的内存泄露，我事先表示感谢（当然如果你机器也能正常运行或者没时间的话那就不麻烦你了）
但如果仍然回复什么“别一味指责api”就没意思了(我从1楼就没指责过什么)，不止是我，相信谁也不喜欢评论家
- /**************************
- * Includes
- *
- **************************/
- #include <windows.h>
- #include <gl/gl.h>
- /**************************
- * Function Declarations
- *
- **************************/
- LRESULT CALLBACK WndProc (HWND hWnd, UINT message,
- WPARAM wParam, LPARAM lParam);
- void EnableOpenGL (HWND hWnd, HDC *hDC, HGLRC *hRC);
- void DisableOpenGL (HWND hWnd, HDC hDC, HGLRC hRC);
- /**************************
- * WinMain
- *
- **************************/
- int WINAPI WinMain (HINSTANCE hInstance,
- HINSTANCE hPrevInstance,
- LPSTR lpCmdLine,
- int iCmdShow)
- {
- WNDCLASS wc;
- HWND hWnd;
- HDC hDC;
- HGLRC hRC;
- MSG msg;
- BOOL bQuit = FALSE;
- float theta = 0.0f;
- /* register window class */
- wc.style = CS_OWNDC;
- wc.lpfnWndProc = WndProc;
- wc.cbClsExtra = 0;
- wc.cbWndExtra = 0;
- wc.hInstance = hInstance;
- wc.hIcon = LoadIcon (NULL, IDI_APPLICATION);
- wc.hCursor = LoadCursor (NULL, IDC_ARROW);
- wc.hbrBackground = (HBRUSH) GetStockObject (BLACK_BRUSH);
- wc.lpszMenuName = NULL;
- wc.lpszClassName = "GLSample";
- RegisterClass (&wc);
- /* create main window */
- hWnd = CreateWindow (
- "GLSample", "OpenGL Sample",
- WS_CAPTION | WS_POPUPWINDOW | WS_VISIBLE,
- 0, 0, 256, 256,
- NULL, NULL, hInstance, NULL);
- /* enable OpenGL for the window */
- EnableOpenGL (hWnd, &hDC, &hRC);
- /* program main loop */
- while (!bQuit)
- {
- /* check for messages */
- if (PeekMessage (&msg, NULL, 0, 0, PM_REMOVE))
- {
- /* handle or dispatch messages */
- if (msg.message == WM_QUIT)
- {
- bQuit = TRUE;
- }
- else
- {
- TranslateMessage (&msg);
- DispatchMessage (&msg);
- }
- }
- else
- {
- /* OpenGL animation code goes here */
- glClearColor (0.0f, 0.0f, 0.0f, 0.0f);
- glClear (GL_COLOR_BUFFER_BIT);
- glPushMatrix ();
- glRotatef (theta, 0.0f, 0.0f, 1.0f);
- glBegin (GL_TRIANGLES);
- glColor3f (1.0f, 0.0f, 0.0f); glVertex2f (0.0f, 1.0f);
- glColor3f (0.0f, 1.0f, 0.0f); glVertex2f (0.87f, -0.5f);
- glColor3f (0.0f, 0.0f, 1.0f); glVertex2f (-0.87f, -0.5f);
- glEnd ();
- glPopMatrix ();
- SwapBuffers (hDC);
- theta += 1.0f;
- Sleep (1);
- }
- }
- /* shutdown OpenGL */
- DisableOpenGL (hWnd, hDC, hRC);
- /* destroy the window explicitly */
- DestroyWindow (hWnd);
- return msg.wParam;
- }
- /********************
- * Window Procedure
- *
- ********************/
- LRESULT CALLBACK WndProc (HWND hWnd, UINT message,
- WPARAM wParam, LPARAM lParam)
- {
- switch (message)
- {
- case WM_CREATE:
- return 0;
- case WM_CLOSE:
- PostQuitMessage (0);
- return 0;
- case WM_DESTROY:
- return 0;
- case WM_KEYDOWN:
- switch (wParam)
- {
- case VK_ESCAPE:
- PostQuitMessage(0);
- return 0;
- }
- return 0;
- default:
- return DefWindowProc (hWnd, message, wParam, lParam);
- }
- }
- /*******************
- * Enable OpenGL
- *
- *******************/
- void EnableOpenGL (HWND hWnd, HDC *hDC, HGLRC *hRC)
- {
- PIXELFORMATDESCRIPTOR pfd;
- int iFormat;
- /* get the device context (DC) */
- *hDC = GetDC (hWnd);
- /* set the pixel format for the DC */
- ZeroMemory (&pfd, sizeof (pfd));
- pfd.nSize = sizeof (pfd);
- pfd.nVersion = 1;
- pfd.dwFlags = PFD_DRAW_TO_WINDOW |
- PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
- pfd.iPixelType = PFD_TYPE_RGBA;
- pfd.cColorBits = 24;
- pfd.cDepthBits = 16;
- pfd.iLayerType = PFD_MAIN_PLANE;
- iFormat = ChoosePixelFormat (*hDC, &pfd);
- SetPixelFormat (*hDC, iFormat, &pfd);
- /* create and enable the render context (RC) */
- *hRC = wglCreateContext( *hDC );
- wglMakeCurrent( *hDC, *hRC );
- }
- /******************
- * Disable OpenGL
- *
- ******************/
- void DisableOpenGL (HWND hWnd, HDC hDC, HGLRC hRC)
- {
- wglMakeCurrent (NULL, NULL);
- wglDeleteContext (hRC);
- ReleaseDC (hWnd, hDC);
- }
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发表于 2009-1-4 09:33:00
