程序貌似是这一段有问题
void EveryDayTip::OnPaint()
{
CDC *pDc = this->GetWindowDC();
HPEN hPen;
hPen = CreatePen(PS_SOLID,1,RGB(180,50,80));
pDc->SelectObject(hPen);//
pDc->MoveTo(25,150);//
pDc->LineTo(25,290 );//
pDc->SetBkMode(TRANSPARENT);//
pDc->TextOut(150, 150, _T("150,150"));//
pDc->TextOut(50, 150, _T("50,150 ,4.15~4.14"));//
pDc->TextOut(150, 250, _T("150,250"));//
ReleaseDC(pDc);
}
打开子对话框时,线条是红的,但是过了几秒后就变成黑的了,想要保持颜色,请问该怎么处理?
这是一个建立在子对话框上的图形,直接绘制于子对话上图形对话框MFC
void EveryDayTip::OnPaint()
{
CDC *pDc = this->GetWindowDC();
HPEN hPen;
hPen = CreatePen(PS_SOLID,1,RGB(180,50,80));
pDc->SelectObject(hPen);//
pDc->MoveTo(25,150);//
pDc->LineTo(25,290 );//
pDc->SetBkMode(TRANSPARENT);//
pDc->TextOut(150, 150, _T("150,150"));//
pDc->TextOut(50, 150, _T("50,150 ,4.15~4.14"));//
pDc->TextOut(150, 250, _T("150,250"));//
ReleaseDC(pDc);
}
打开子对话框时,线条是红的,但是过了几秒后就变成黑的了,想要保持颜色,请问该怎么处理?
这是一个建立在子对话框上的图形,直接绘制于子对话上图形对话框MFC
绘图完成要释放:
pDc->SelectObject(hOldPen);
DeleteObject(hPen);
HBRUSH hOldPen = (HBRUSH)pDc->SelectObject(hPen);
pDc->SelectObject(hOldPen );DeleteObject(hOldPen );
HPEN hPen; // 为啥不用CPen?
hPen = CreatePen(PS_SOLID,1,RGB(180,50,80));
HPEN hOlePen = (HPEN)dc.SelectObject(hPen);//
dc.MoveTo(25,150);//
dc.LineTo(25,290 );//
dc.SetBkMode(TRANSPARENT);//
dc.TextOut(150, 150, _T("150,150"));//
dc.TextOut(50, 150, _T("50,150 ,4.15~4.14"));//
dc.TextOut(150, 250, _T("150,250"));//
dc.SelectObject(hOldPen);
DeleteObject(hPen);
ReleaseDC(pDc);