IC Imaging Control C++

OverlayBitmap::getDropOutColor Method

OverlayBitmap::getDropOutColor Method

Returns the currently used dropout color.
Syntax:
COLORREF getDropOutColor() const;
Return value:

The currently used dropout color. It can be used in the OverlayBitmap::fill method to clear the overlay bitmap.

Sample:

This example demonstrates how to fill the complete overlay bitmap with the color magenta - the current dropout color. This makes the complete overlay bitmap transparent on the video stream.

smart_ptr<DShowLib::OverlayBitmap> pOverlayBitmap;
pOverlayBitmap = m_Grabber.getOverlay();
pOverlayBitmap->setDropOutColor( RGB(255,0,255));   // Magenta
 
// Fill the bitmap with the dropout color to make it completely transparent.
pOverlayBitmap->fill(pOverlayBitmap->getDropOutColor());
See also: OverlayBitmap, OverlayBitmap::setDropOutColor, OverlayBitmap::fill

<< OverlayBitmap

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