WINGDIAPI HGLRC GLAPIENTRY wglCreateContext(HDC hdc)
{
int i = 0;
if (!ctx_count) {
for(i=0;i<MESAWGL_CTX_MAX_COUNT;i++) {
wgl_ctx[i].ctx = NULL;
}
}
for( i = 0; i < MESAWGL_CTX_MAX_COUNT; i++ ) {
if ( wgl_ctx[i].ctx == NULL ) {
wgl_ctx[i].ctx =
WMesaCreateContext(hdc, NULL, (GLboolean)GL_TRUE,
(GLboolean) (pfd[curPFD-1].doubleBuffered ?
GL_TRUE : GL_FALSE),
(GLboolean)(pfd[curPFD-1].pfd.cAlphaBits ?
GL_TRUE : GL_FALSE) );
if (wgl_ctx[i].ctx == NULL)
break;
ctx_count++;
return ((HGLRC)wgl_ctx[i].ctx);
}
}
SetLastError(0);
return(NULL);
}
GLenum tkInitWindowAW(char *title, BOOL bUnicode)
{
WMesaContext Cur;
WNDCLASS wndclass;
RECT WinRect;
HANDLE hInstance;
ATOM aRegister;
GLenum Result = GL_FALSE,RGB_Flag=GL_TRUE,DB_Flag=GL_FALSE;
hInstance = GetModuleHandle(NULL);
// Must not define CS_CS_PARENTDC style.
wndclass.style = CS_HREDRAW | CS_VREDRAW;
wndclass.lpfnWndProc = (WNDPROC)tkWndProc;
wndclass.cbClsExtra = 0;
wndclass.cbWndExtra = 0;
wndclass.hInstance = hInstance;
wndclass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
wndclass.hCursor = LoadCursor(NULL, IDC_ARROW);
wndclass.hbrBackground = GetStockObject(BLACK_BRUSH);
wndclass.lpszMenuName = NULL;
if (bUnicode)
wndclass.lpszClassName = (LPCSTR)lpszClassNameW;
else
wndclass.lpszClassName = (LPCSTR)lpszClassName;
if (bUnicode)
{
aRegister = RegisterClassW((CONST WNDCLASSW *)&wndclass);
}
else
{
aRegister = RegisterClass(&wndclass);
}
/*
* If the window failed to register, then there's no
* need to continue further.
*/
if(0 == aRegister)
{
PrintMessage("Failed to register window class\n");
return(Result);
}
/*
* Make window large enough to hold a client area as large as windInfo
*/
WinRect.left = windInfo.x;
WinRect.right = windInfo.x + windInfo.width;
WinRect.top = windInfo.y;
WinRect.bottom = windInfo.y + windInfo.height;
AdjustWindowRect(&WinRect, WS_OVERLAPPEDWINDOW, FALSE);
/*
* Must use WS_CLIPCHILDREN and WS_CLIPSIBLINGS styles.
*/
if (bUnicode)
{
tkhwnd = CreateWindowW(
(LPCWSTR)lpszClassNameW,
(LPCWSTR)title,
WS_OVERLAPPEDWINDOW | WS_CLIPCHILDREN | WS_CLIPSIBLINGS,
(windInfo.bDefPos) ? CW_USEDEFAULT : WinRect.left,
(windInfo.bDefPos) ? CW_USEDEFAULT : WinRect.top,
WinRect.right - WinRect.left,
WinRect.bottom - WinRect.top,
NULL,
NULL,
hInstance,
NULL);
}
else
{
tkhwnd = CreateWindow(
lpszClassName,
title,
WS_OVERLAPPEDWINDOW | WS_CLIPCHILDREN | WS_CLIPSIBLINGS,
(windInfo.bDefPos) ? CW_USEDEFAULT : WinRect.left,
(windInfo.bDefPos) ? CW_USEDEFAULT : WinRect.top,
WinRect.right - WinRect.left,
WinRect.bottom - WinRect.top,
NULL,
NULL,
hInstance,
NULL);
}
if ( NULL != tkhwnd )
{
// If default window positioning used, find out window position and fix
// up the windInfo position info.
if (windInfo.bDefPos)
{
GetWindowRect(tkhwnd, &WinRect);
windInfo.x = WinRect.left + GetSystemMetrics(SM_CXFRAME);
windInfo.y = WinRect.top + GetSystemMetrics(SM_CYCAPTION)
- GetSystemMetrics(SM_CYBORDER)
+ GetSystemMetrics(SM_CYFRAME);
}
tkhdc = GetDC(tkhwnd);
if ( NULL != tkhdc )
ShowWindow(tkhwnd, SW_SHOWDEFAULT);
else
PrintMessage("Could not get an HDC for window 0x%08lX\n", tkhwnd );
}
else
PrintMessage("create window failed\n");
if (windInfo.type & TK_INDEX)
{
RGB_Flag=GL_FALSE;
tkSetRGBMap(NCOLORS,(float *) tkRGBMap);
}
if (windInfo.type & TK_DOUBLE)
DB_Flag=GL_TRUE;
Cur=WMesaCreateContext(tkhwnd,tkhpalette,RGB_Flag,DB_Flag);
WMesaMakeCurrent(Cur);
return GL_TRUE;
}
