How can use ArcTo function to draw arc???

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hello,
How can draw arc in mfc? i try to use ArcTo(...) function but it didn't work.:confused:
Here is my code:

BOOL CModlessDlg::OnInitDialog()
{
	CDialog::OnInitDialog();
	CClientDC d(this);
	d.ArcTo(20,30,30,45,20,60,45,20);
	return TRUE;  // return TRUE  unless you set the focus to a control 
}

please help.
regard

Posted 5-Aug-10 6:15am

zahraZa

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E.F. Nijboer · Answer 1 · 2010-08-05T22:17:00

Have a look at this link, they give some good info:

http://www.ucancode.net/faq/CDC_Arc_Pie_Chord.htm[^]

By the way, shouldn't you be drawing in the paint event? You now simply draw it once and will be erased (or not show up at all) if not redrawn in the paint event. Did you also try to draw some other shapes? Did you also define and use a Pen and Brush accordingly?

Good luck!

Sauro Viti · Answer 2 · 2010-08-05T22:30:00

Solution 2

As E.F. Nijboer said, if you have drawn your ellipse only on the OnInitDialog method, you have no chance to see it on the dialog: when OnInitDialog is called, the dialog is not yet visible, then after your initialization code the OnPain is called and your drawings are lost!

Here[^] there is the MSDN documentation about ArcTo...

Posted 5-Aug-10 22:30pm

Sauro Viti

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zahraZa 19-Aug-10 16:24pm

Reason for my vote of 3
useful