AfxDrawDitheredBitmap

Статья
10/16/2008

Draws a bitmap, replacing its background with a dithered (checker) pattern.

void AFXAPI AfxDrawDitheredBitmap(
   CDC *pDC,
   int x,
   int y,
   const CBitmap &rSrc,
   COLORREF cr1,
   COLORREF cr2
);

Параметры

pDC
Points to the destination DC.
x
The destination x-coordinate.
y
The destination y-coordinate.
rSrc
The source bitmap.
cr1
One of the two dither colors, typically white.
cr2
The other dither color, typically light gray (COLOR_MENU).

Заметки

The source bitmap is drawn on the destination DC with a two-color (cr1 and cr2) checkered pattern replacing the bitmap's background. The background of the source bitmap is defined as its white pixels and all pixels matching the color of the pixel in the upper-left corner of the bitmap.

Пример сглаживания растрового изображения

Пример

void CDCView::DrawDitheredBitmap(CDC* pDC)
{
   CBitmap bm;
   bm.LoadBitmap(IDB_BITMAP1);
   AfxDrawDitheredBitmap(pDC, 10, 50, bm, RGB(255,255,255),
      GetSysColor(COLOR_BTNFACE));
}