Gradient brush in natural C ++?
3 answers
To draw a vertical gradient:
void VerticalGradient(HDC hDC, const RECT& GradientFill,
COLORREF rgbTop, COLORREF rgbBottom)
{
GRADIENT_RECT gradientRect = { 0, 1 };
TRIVERTEX triVertext[ 2 ] = {
GradientFill.left - 1,
GradientFill.top - 1,
GetRValue(rgbTop) << 8,
GetGValue(rgbTop) << 8,
GetBValue(rgbTop) << 8,
0x0000,
GradientFill.right,
GradientFill.bottom,
GetRValue(rgbBottom) << 8,
GetGValue(rgbBottom) << 8,
GetBValue(rgbBottom) << 8,
0x0000
};
GradientFill(hDC, triVertext, 2, &gradientRect, 1, GRADIENT_FILL_RECT_V);
}
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You will need a combination of Win32 API GradientFill , CreateCompatibleBitmap and CreatePatternBrush
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C # uses GDI + for Drawing2d. You can also use GDI + in C ++ - MSDN Create Linear Gradient
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