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allow win32 window to be resized

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This commit is contained in:
Thomas Bernard 2018-06-21 16:45:22 +02:00
parent eb65d1006a
commit 48ee0c06d2
1 changed files with 28 additions and 5 deletions
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33
src/win32screen.c
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@ -69,6 +69,10 @@ static LRESULT CALLBACK Win32_WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LP
{ {
case WM_CREATE: case WM_CREATE:
break; break;
case WM_SIZE:
Resize_width = LOWORD(lParam);
Resize_height = HIWORD(lParam);
break;
case WM_CLOSE: case WM_CLOSE:
Quit_is_required = 1; Quit_is_required = 1;
break; break;
@ -170,6 +174,7 @@ int Init_Win32(HINSTANCE hInstance, HINSTANCE hPrevInstance)
static int Video_AllocateDib(int width, int height) static int Video_AllocateDib(int width, int height)
{ {
BITMAPINFO *bi; BITMAPINFO *bi;
BITMAP bm;
HDC dc; HDC dc;
if (Windows_DIB != NULL) { if (Windows_DIB != NULL) {
@ -193,23 +198,40 @@ static int Video_AllocateDib(int width, int height)
return -1; return -1;
} }
ReleaseDC(NULL, dc); ReleaseDC(NULL, dc);
Windows_DIB_width = width; if (GetObject(Windows_DIB, sizeof(bm), &bm) > 0)
Windows_DIB_height = height; {
Windows_DIB_width = bm.bmWidthBytes;
Windows_DIB_height = bm.bmHeight;
}
else
{
Windows_DIB_width = width;
Windows_DIB_height = height;
}
return 0; return 0;
} }
static void Win32_CreateWindow(int width, int height, int fullscreen) static void Win32_CreateWindow(int width, int height, int fullscreen)
{ {
DWORD style; DWORD style;
RECT r;
style = WS_CAPTION | WS_MINIMIZEBOX | WS_SYSMENU; style = WS_CAPTION | WS_MINIMIZEBOX | WS_SYSMENU;
/* allow window to be resized */ /* allow window to be resized */
style |= WS_THICKFRAME; style |= WS_THICKFRAME;
style |= WS_MAXIMIZEBOX;
r.left = 0;
r.top = 0;
r.right = width;
r.bottom = height;
AdjustWindowRect(&r, style, FALSE);
Win32_hwnd = CreateWindow(TEXT("grafx2"), TEXT("grafx2"), style, CW_USEDEFAULT, CW_USEDEFAULT, Win32_hwnd = CreateWindow(TEXT("grafx2"), TEXT("grafx2"), style, CW_USEDEFAULT, CW_USEDEFAULT,
width, height, NULL, NULL, r.right - r.left, r.bottom - r.top, NULL, NULL,
GetModuleHandle(NULL), NULL); GetModuleHandle(NULL), NULL);
if (Win32_hwnd == NULL) { if (Win32_hwnd == NULL)
{
Error(ERROR_INIT); Error(ERROR_INIT);
return; return;
} }
@ -219,7 +241,8 @@ static void Win32_CreateWindow(int width, int height, int fullscreen)
void GFX2_Set_mode(int *width, int *height, int fullscreen) void GFX2_Set_mode(int *width, int *height, int fullscreen)
{ {
Video_AllocateDib(*width, *height); Video_AllocateDib(*width, *height);
Win32_CreateWindow(*width, *height, fullscreen); if (Win32_hwnd == NULL)
Win32_CreateWindow(*width, *height, fullscreen);
} }
byte Get_Screen_pixel(int x, int y) byte Get_Screen_pixel(int x, int y)