创建椭圆,并用brush填充,结果没有效果

Question

HRGN hEllipse=CreateEllipticRgn(sScnCoor.x-12,sScnCoor.y-8,sScnCoor.x+12,sScnCoor.y+8);
LOGBRUSH logEllipseBrush;
logEllipseBrush.lbColor=RGB(110,20,50);
logEllipseBrush.lbStyle=BS_HOLLOW;
HBRUSH hEllipsBrush=CreateBrushIndirect(&logEllipseBrush);
FillRgn(m_hDC,hEllipse,hEllipsBrush);
不知道哪里出了问题??

Answer 1

SelectObject()
要把刷子选入设备才能用啊.
你只创建了.

Answer 2

HRGN hEllipse=CreateEllipticRgn(sScnCoor.x-12,sScnCoor.y-8,sScnCoor.x+12,sScnCoor.y+8);
LOGBRUSH logEllipseBrush;
logEllipseBrush.lbColor=RGB(110,20,50);
logEllipseBrush.lbStyle=BS_HOLLOW;
HBRUSH hEllipsBrush=CreateBrushIndirect(&logEllipseBrush);
         if(CreateBrushIndirect!=NULL) SelectObject(m_hDC, hEllipsBrush);//这个
FillRgn(m_hDC,hEllipse,hEllipsBrush);

Answer 3

pDC->SelectObject(&hEllipsBrush);

Answer 4

FillRgn不需要SelectObject
只因你的画刷是空心的(BS_HOLLOW)试一次BS_SOLID?

Answer 5

DentistryDoctor(MVP-My heart will fly,in the sky.)说的对, HRGN hEllipse=CreateEllipticRgn(sScnCoor.x-12,sScnCoor.y-8,sScnCoor.x+12,sScnCoor.y+8); LOGBRUSH logEllipseBrush;
logEllipseBrush.lbColor=RGB(110,20,50);
logEllipseBrush.lbStyle=BS_SOLID;
HBRUSH hEllipsBrush=CreateBrushIndirect(&logEllipseBrush);
FillRgn(dc,hEllipse,hEllipsBrush);改成实Solid Brush,    Hollow brush.是个空刷子.

Answer 6

哦,原来刷子是空心的!
我已经用PaitRgn代替FillRgn了.