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Add: add windows capture multi screen support

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This commit is contained in:
vcaesar 2023-01-18 11:45:18 -08:00
parent 95be5f752f
commit 736fa1cc26
1 changed files with 8 additions and 7 deletions
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15
screen/screengrab_c.h
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@ -72,14 +72,17 @@ MMBitmapRef copyMMBitmapFromDisplayInRect(MMRectInt32 rect, int32_t display_id)
HBITMAP dib;
BITMAPINFO bi;
int32_t x = rect.origin.x, y = rect.origin.y;
int32_t w = rect.size.w, h = rect.size.h;
/* Initialize bitmap info. */
bi.bmiHeader.biSize = sizeof(bi.bmiHeader);
bi.bmiHeader.biWidth = (long)rect.size.w;
bi.bmiHeader.biHeight = -(long)rect.size.h; /* Non-cartesian, please */
bi.bmiHeader.biWidth = (long) w;
bi.bmiHeader.biHeight = -(long) h; /* Non-cartesian, please */
bi.bmiHeader.biPlanes = 1;
bi.bmiHeader.biBitCount = 32;
bi.bmiHeader.biCompression = BI_RGB;
bi.bmiHeader.biSizeImage = (DWORD)(4 * rect.size.w * rect.size.h);
bi.bmiHeader.biSizeImage = (DWORD)(4 * w * h);
bi.bmiHeader.biXPelsPerMeter = 0;
bi.bmiHeader.biYPelsPerMeter = 0;
bi.bmiHeader.biClrUsed = 0;
@ -102,8 +105,7 @@ MMBitmapRef copyMMBitmapFromDisplayInRect(MMRectInt32 rect, int32_t display_id)
/* Copy the data into a bitmap struct. */
BOOL b = (screenMem == NULL) ||
SelectObject(screenMem, dib) == NULL ||
!BitBlt(screenMem, (int)0, (int)0, (int)rect.size.w, (int)rect.size.h,
screen, rect.origin.x, rect.origin.y, SRCCOPY);
!BitBlt(screenMem, (int)0, (int)0, (int)w, (int)h, screen, x, y, SRCCOPY);
if (b) {
/* Error copying data. */
ReleaseDC(hwnd, screen);
@ -113,8 +115,7 @@ MMBitmapRef copyMMBitmapFromDisplayInRect(MMRectInt32 rect, int32_t display_id)
return NULL;
}
bitmap = createMMBitmap_c(NULL, rect.size.w, rect.size.h, 4 * rect.size.w,
(uint8_t)bi.bmiHeader.biBitCount, 4);
bitmap = createMMBitmap_c(NULL, w, h, 4 * w, (uint8_t)bi.bmiHeader.biBitCount, 4);
/* Copy the data to our pixel buffer. */
if (bitmap != NULL) {