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
| HRGN CreateRegionFromBitmap(Graphics::TBitmap* pBitmapSource, TColor couleurTransparente)
{
HRGN pBitmapRGN = CreateRectRgn(0,0,0,0);
HRGN tmpRGN;
int largeurBitmap = pBitmapSource->Width;
int hauteurBitmap = pBitmapSource->Height;
int x, largeur;
for (int y = 0; y<largeurBitmap; y++)
{
x = 0;
largeur = 0;
while (x < hauteurBitmap)
{
if (pBitmapSource->Canvas->Pixels[y][x] != couleurTransparente)
largeur++;
else
if (largeur != 0)
{
tmpRGN = CreateRectRgn(x - largeur, y, x, y + 1);
CombineRgn(pBitmapRGN, pBitmapRGN, tmpRGN, RGN_OR);
DeleteObject(tmpRGN);
largeur = 0;
}
x++;
}
if (largeur != 0)
{
tmpRGN = CreateRectRgn(x - largeur, y, x, y + 1);
CombineRgn(pBitmapRGN, pBitmapRGN, tmpRGN, RGN_OR);
DeleteObject(tmpRGN);
}
}
return pBitmapRGN;
} |
Partager