Merge pull request #19 from recidivism5/recidivism5-fix-BITMAPINFO-ou…

…t-of-bounds

Fix BITMAPINFO out of bounds access. Revert to BI_BITFIELDS.

fenster.h

@@ -168,6 +168,10 @@ FENSTER_API int fenster_loop(struct fenster *f) {
 // clang-format off
 static const uint8_t FENSTER_KEYCODES[] = {0,27,49,50,51,52,53,54,55,56,57,48,45,61,8,9,81,87,69,82,84,89,85,73,79,80,91,93,10,0,65,83,68,70,71,72,74,75,76,59,39,96,0,92,90,88,67,86,66,78,77,44,46,47,0,0,0,32,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,17,3,0,20,0,19,0,5,18,4,26,127};
 // clang-format on
+typedef struct BINFO{
+    BITMAPINFOHEADER    bmiHeader;
+    RGBQUAD             bmiColors[3];
+}BINFO;
 static LRESULT CALLBACK fenster_wndproc(HWND hwnd, UINT msg, WPARAM wParam,
                                         LPARAM lParam) {
   struct fenster *f = (struct fenster *)GetWindowLongPtr(hwnd, GWLP_USERDATA);
@@ -178,7 +182,7 @@ static LRESULT CALLBACK fenster_wndproc(HWND hwnd, UINT msg, WPARAM wParam,
     HDC memdc = CreateCompatibleDC(hdc);
     HBITMAP hbmp = CreateCompatibleBitmap(hdc, f->width, f->height);
     HBITMAP oldbmp = SelectObject(memdc, hbmp);
-    BITMAPINFO bi = {{sizeof(bi), f->width, -f->height, 1, 32, BI_RGB}};
+    BINFO bi = {{sizeof(bi), f->width, -f->height, 1, 32, BI_BITFIELDS}};
     bi.bmiColors[0].rgbRed = 0xff;
     bi.bmiColors[1].rgbGreen = 0xff;
     bi.bmiColors[2].rgbBlue = 0xff;