用GDI填充部分圆角矩形+

您是否尝试过使用以下组合: CreateRoundRectRegion 然后 FillRgn 要填充非矩形区域?

CRgn   rgnA, rgnB, rgnC;

VERIFY(rgnA.CreateRoundRectRgn( 50, 50, 150, 150, 30, 30 ));
VERIFY(rgnB.CreateRoundRectRgn( 200, 75, 250, 125, 50, 50 ));
VERIFY(rgnC.CreateRectRgn( 0, 0, 50, 50 ));

int nCombineResult = rgnC.CombineRgn( &rgnA, &rgnB, RGN_OR );
ASSERT( nCombineResult != ERROR && nCombineResult != NULLREGION );

CBrush brA, brB, brC;
VERIFY(brA.CreateSolidBrush( RGB(255, 0, 0) ));  
VERIFY(pDC->FillRgn( &rgnA, &brA));      // rgnA Red Filled

VERIFY(brB.CreateSolidBrush( RGB(0, 255, 0) ));  
VERIFY(pDC->FillRgn( &rgnB, &brB));      // rgnB Green Filled
VERIFY(brC.CreateSolidBrush( RGB(0, 0, 255) ));  // rgnC Blue
VERIFY(pDC->FrameRgn( &rgnC, &brC, 2, 2 ));

一般来说,当您想要对非矩形区域执行某些操作时,您必须开始查看区域。