void CChildView::OnPaint()
{
CPaintDC *dc;
CDC *pdc;
CRgn ur;
ur.CreateRectRgn(0, 0, 0, 0);
GetUpdateRgn(&ur);
CRect cr;
GetClientRect(&cr);
if (theApp.m_bStarted && !theApp.m_map.IsEmpty()) {
// pdc = &dc;
m_MemDC.SelectClipRgn(&ur);
pdc = &m_MemDC;
theApp.m_map.DrawMap(*pdc, &cr, &ur);
CRect r;
// r = cr;
ur.GetRgnBox(r);
// r.InflateRect(1, 1);
if (r.left < 0)
r.left = 0;
if (r.top < 0)
r.top = 0;
dc = new CPaintDC(this); // device context for painting
dc->BitBlt(r.left, r.top, r.Width(), r.Height(), &m_MemDC, r.left, r.top, SRCCOPY);
}
else {
dc = new CPaintDC(this); // device context for painting
if (theApp.m_bStarted) {
dc->SetTextAlign(TA_CENTER);
CPoint cp = cr.CenterPoint();
CString s;
s.Format("There are no maps in '%s'", theApp.m_map.m_sMapsPath);
dc->ExtTextOut(cp.x, cp.y - dc->GetOutputTextExtent("W").cy/2, ETO_OPAQUE, &cr, s, NULL);
}
else {
dc->FillSolidRect(cr, 0);
}
}
delete dc;
}
void CMainWindow::OnPaint ()
{
CPaintDC dc (this);
//
// Initialize the device context.
//
dc.SetMapMode (MM_LOENGLISH);
dc.SetTextAlign (TA_CENTER | TA_BOTTOM);
dc.SetBkMode (TRANSPARENT);
//
// Draw the body of the ruler.
//
CBrush brush (RGB (255, 255, 0));
CBrush* pOldBrush = dc.SelectObject (&brush);
dc.Rectangle (100, -100, 1300, -200);
dc.SelectObject (pOldBrush);
//
// Draw the tick marks and labels.
//
for (int i=125; i<1300; i+=25) {
dc.MoveTo (i, -192);
dc.LineTo (i, -200);
}
for (i=150; i<1300; i+=50) {
dc.MoveTo (i, -184);
dc.LineTo (i, -200);
}
for (i=200; i<1300; i+=100) {
dc.MoveTo (i, -175);
dc.LineTo (i, -200);
CString string;
string.Format (_T ("%d"), (i / 100) - 1);
dc.TextOut (i, -175, string);
}
}