CRect::CenterPoint
Calculates the centerpoint of CRect by adding the left and right values and dividing by two, and adding the top and bottom values and dividing by two.
CPoint CenterPoint( ) const throw( );
Return Value
A CPoint object that is the centerpoint of CRect.
Example
// Code from this OnPaint() implementation can be pasted into your own application
// to draw lines that would look like a letter "Y" within your dialog.
void CMyDlg::OnPaint()
{
CPaintDC dc(this); // device context for painting
// get the size and position of the client area of
// your window
CRect rect;
GetClientRect(&rect);
// Move the current pen to the top left of the window. We call the
// TopLeft() member of CRect here and it returns a CPoint object we
// pass to the override of CDC::MoveTo() that accepts a CPoint.
dc.MoveTo(rect.TopLeft());
// Draw a line from the top left to the center of the window.
// CenterPoint() gives us the middle point of the window as a
// CPoint, and since CDC::LineTo() has an override that accepts a
// CPoint, we can just pass it along.
dc.LineTo(rect.CenterPoint());
// Now, draw a line to the top right of the window. There's no
// CRect member which returns a CPoint for the top right of the
// window, so we'll reference the CPoint members directly and call
// the CDC::LineTo() override which takes two integers.
dc.LineTo(rect.right, rect.top);
// The top part of the "Y" is drawn. Now, we'll draw the stem. We
// start from the center point.
dc.MoveTo(rect.CenterPoint());
// and then draw to the middle of the bottom edge of the window.
// We'll get the x-coordinate from the x member of the CPoint
// returned by CenterPoint(), and the y value comes directly from
// the rect.
dc.LineTo(rect.CenterPoint().x, rect.bottom);
}
Requirements
Header: atltypes.h