Use MFC CClientDC draw four Angle box-CodePudding

The last effect is draw four rounded corners as shown in figure
Note: similar to the rounded rectangle
CodePudding user response:
 
Void CxxxxDlg: : DrawRoundFrame (CDC * pDC, CRect & amp; Clip, int diameter, int lineLen) 
{
//left up 
PDC - & gt; MoveTo (clip. Left + diameter/2 + lineLen, clip the top). 
CPoint startLu (clip. Left + diameter/2, clip. The top). 
PDC - & gt; LineTo (startLu. X, startLu. Y); 
CPoint endLu (clip. Left, clip. Top + diameter/2); 
CRect rcLu (clip. Left, clip. Top, 
Clip. Left + diameter, clip. Top + diameter); 
//pDC - & gt; SetArcDirection (AD_COUNTERCLOCKWISE); 
PDC - & gt; ArcTo (& amp; RcLu startLu, endLu); 
PDC - & gt; The LineTo (pDC - & gt; GetCurrentPosition (). X, clip. Left + diameter/2 + lineLen); 
//left down 
PDC - & gt; MoveTo (clip. Left, clip. The bottom diameter/2 - lineLen); 
CPoint startLd (clip. Left, clip. The bottom diameter/2); 
PDC - & gt; LineTo (startLd. X, startLd. Y); 
CPoint endLd (clip. Left + diameter/2, clip, bottom); 
CRect rcLd (clip. Left, clip. The bottom diameter, 
Clip. Left + diameter, clip, bottom); 
PDC - & gt; ArcTo (& amp; RcLd startLd, endLd); 
PDC - & gt; The LineTo (pDC - & gt; GetCurrentPosition (). X + lineLen, clip, bottom); 
//right down 
PDC - & gt; MoveTo (clip. Right - diameter/2 - lineLen, clip, bottom); 
CPoint startRd (clip. Right - diameter/2, clip, bottom); 
PDC - & gt; LineTo (startRd. X, startRd. Y); 
CPoint endRd (clip. Right, clip. The bottom diameter/2); 
CRect rcRd (clip. Right - diameter, clip the bottom diameter, 
Clip. The right + 1, clip. The bottom + 1); 
PDC - & gt; ArcTo (& amp; RcRd startRd, endRd); 
PDC - & gt; The LineTo (pDC - & gt; GetCurrentPosition (). X, clip. The bottom diameter/2 - lineLen); 
//right up 
PDC - & gt; MoveTo (clip. Right, clip. Top + diameter/2 + lineLen); 
CPoint startRu (clip. Right, clip. Top + diameter/2); 
PDC - & gt; LineTo (startRu. X, startRu. Y);//| 
CPoint endRu (clip. Right - diameter/2, clip. The top). 
CRect rcRu (clip. Right - diameter, clip the top, 
Clip. Right, clip. Top + diameter); 
PDC - & gt; ArcTo (& amp; RcRu startRu, endRu); 
PDC - & gt; The LineTo (pDC - & gt; GetCurrentPosition (). X-ray lineLen, clip. Top); 
} 

Void CxxxxDlg: : OnButton1 () 
{
//TODO: Add your the control notification handler code here 
CClientDC dc (this); 
CRect clip (100100300300); 
DrawRoundFrame (& amp; Dc, clip, 30, 20); 
}
CodePudding user response:
A straight line and arc drawn respectively