1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
|
#include "config.h"
#if _run_app == _multi_window
#include <windows.h>
#include <GL/GfxDevice.h>
#include <GL/glu.h>
#define MAX_LOADSTRING 100
HINSTANCE hInstance;
HWND hWnd, hWnd2;
struct WindowData {
HWND window;
HDC deviceContext;
HGLRC renderContext;
};
LONG WINAPI WindowProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam) {
static PAINTSTRUCT ps;
int pf;
PIXELFORMATDESCRIPTOR pfd;
HDC deviceContext;
HGLRC renderContext;
struct WindowData * windowData = (struct WindowData *) GetWindowLongPtr(hWnd, 0);
switch (uMsg) {
case WM_NCCREATE:
deviceContext = GetDC(hWnd);
renderContext = wglCreateContext(deviceContext);
memset(&pfd, 0, sizeof(pfd));
pfd.nSize = sizeof(pfd);
pfd.nVersion = 1;
pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL;
pfd.iPixelType = PFD_TYPE_RGBA;
pfd.cColorBits = 32;
pf = ChoosePixelFormat(deviceContext, &pfd);
SetPixelFormat(deviceContext, pf, &pfd);
DescribePixelFormat(deviceContext, pf, sizeof(PIXELFORMATDESCRIPTOR), &pfd);
ReleaseDC(hWnd, deviceContext);
renderContext = wglCreateContext(deviceContext);
wglMakeCurrent(deviceContext, renderContext);
windowData = (struct WindowData *) malloc(sizeof(struct WindowData));
windowData->window = hWnd;
windowData->deviceContext = deviceContext;
windowData->renderContext = renderContext;
SetWindowLongPtr(hWnd, 0, (LONG)windowData);
return TRUE;
case WM_ACTIVATE:
wglMakeCurrent(windowData->deviceContext, windowData->renderContext);
break;
case WM_PAINT:
wglMakeCurrent(windowData->deviceContext, windowData->renderContext);
glClear(GL_COLOR_BUFFER_BIT);
glBegin(GL_TRIANGLES);
glVertex2i(0, 1);
glVertex2i(-1, -1);
glVertex2i(1, -1);
glEnd();
glFlush();
wglMakeCurrent(NULL, NULL);
BeginPaint(hWnd, &ps); EndPaint(hWnd, &ps);
return 0;
case WM_SIZE:
glViewport(0, 0, LOWORD(lParam), HIWORD(lParam)); PostMessage(hWnd, WM_PAINT, 0, 0); return 0;
case WM_CHAR:
if (wParam == 27) { PostQuitMessage(0); break; }
else { return 0; }
case WM_DESTROY:
ReleaseDC(hWnd, windowData->deviceContext);
wglDeleteContext(windowData->renderContext);
return 0;
case WM_CLOSE:
PostQuitMessage(0); return 0;
}
return DefWindowProc(hWnd, uMsg, wParam, lParam);
}
int WinMain(_In_ HINSTANCE hInstance, _In_opt_ HINSTANCE hPrevInstance, _In_ LPTSTR lpCmdLine, _In_ int nCmdShow) {
MSG msg;
WNDCLASS wc;
int pf;
PIXELFORMATDESCRIPTOR pfd;
hInstance = GetModuleHandle(NULL);
wc.style = CS_OWNDC;
wc.lpfnWndProc = (WNDPROC)WindowProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = sizeof(struct WindowData *);
wc.hInstance = hInstance;
wc.hIcon = LoadIcon(NULL, IDI_WINLOGO);
wc.hCursor = LoadCursor(NULL, IDC_ARROW);
wc.hbrBackground = NULL;
wc.lpszMenuName = NULL;
wc.lpszClassName = "OpenGL2";
RegisterClass(&wc);
hWnd = CreateWindow("OpenGL2", "Hi there", WS_VSCROLL|WS_TILEDWINDOW, 0, 0, 640, 480, NULL, NULL, hInstance, NULL);
hWnd2 = CreateWindow("OpenGL2", "Hi there", WS_OVERLAPPEDWINDOW | WS_CLIPSIBLINGS | WS_CLIPCHILDREN, 110, 110, 640, 480, NULL, NULL, hInstance, NULL);
ShowWindow(hWnd, nCmdShow);
ShowWindow(hWnd2, nCmdShow);
while (GetMessage(&msg, NULL, 0, 0)) { TranslateMessage(&msg); DispatchMessage(&msg); }
wglMakeCurrent(NULL, NULL);
DestroyWindow(hWnd);
return msg.wParam;
}
#endif // _run_app == _multi_window
|
