void CEditDlgPolygon::OnDrawItem(int nIDCtl, LPDRAWITEMSTRUCT lpDrawItemStruct)
{
int which = lpDrawItemStruct->itemID;
CDC dc;
dc.Attach( lpDrawItemStruct->hDC );
if (which != -1) {
COLORREF clrBackground = GetSysColor(lpDrawItemStruct->itemState & ODS_SELECTED ? COLOR_HIGHLIGHT : COLOR_WINDOW);
COLORREF oldBackground = dc.SetBkColor(clrBackground);
// Draw the background box
CBrush theBrush(clrBackground);
CBrush *oldBrush = dc.SelectObject(&theBrush);
CPen *oldPen = (CPen *)(dc.SelectStockObject(NULL_PEN));
dc.Rectangle(&(lpDrawItemStruct->rcItem));
CPen thePen(PenStyles[which],1,lpDrawItemStruct->itemState & ODS_SELECTED ? RGB(255,255,255) : RGB(0,0,0));
dc.SelectObject(&thePen);
int y = lpDrawItemStruct->rcItem.top + (lpDrawItemStruct->rcItem.bottom - lpDrawItemStruct->rcItem.top)/2;
int width = (lpDrawItemStruct->rcItem.right - lpDrawItemStruct->rcItem.left)-6;
dc.MoveTo(3,y);
dc.LineTo(width,y);
// Restore the dc to it's old state
dc.SelectObject(oldPen);
dc.SelectObject(oldBrush);
dc.SetBkColor(oldBackground);
}
// If the item has the focus, draw focus rectangle
if (lpDrawItemStruct->itemState & ODS_FOCUS)
DrawFocusRect(lpDrawItemStruct->hDC, &lpDrawItemStruct->rcItem);
dc.Detach();
// DON'T: CDialog::OnDrawItem(nIDCtl, lpDrawItemStruct);
}
void CFileEditCtrl::DrawButton(int nButtonState)
{
ASSERT (IsWindow(this));
// if the control is disabled, ensure the button is drawn disabled
if (GetStyle() & WS_DISABLED)
nButtonState = BTN_DISABLED;
// Draw the button in the specified state (Up, Down, or Disabled)
CWindowDC DC(this); // get the DC for drawing
CBrush theBrush(GetSysColor(COLOR_3DFACE)); // the colour of the button background
CBrush *pOldBrush = DC.SelectObject(&theBrush);
if (nButtonState == BTN_DOWN) // Draw button as down
{
// draw the border
CPen thePen(PS_SOLID, 1, GetSysColor(COLOR_3DSHADOW));
CPen *pOldPen = DC.SelectObject(&thePen);
DC.Rectangle(&m_rcButtonArea);
DC.SelectObject(pOldPen);
thePen.DeleteObject();
// draw the dots
DrawDots (&DC, GetSysColor(COLOR_BTNTEXT), 1);
}
else // draw button as up
{
CPen thePen(PS_SOLID, 1, GetSysColor(COLOR_3DFACE));
CPen *pOldPen = DC.SelectObject(&thePen);
DC.Rectangle(&m_rcButtonArea);
DC.SelectObject(pOldPen);
thePen.DeleteObject();
// draw the border
DC.DrawEdge(&m_rcButtonArea, EDGE_RAISED, BF_RECT);
// draw the dots
if (nButtonState == BTN_DISABLED)
{
DrawDots (&DC, GetSysColor(COLOR_3DHILIGHT), 1);
DrawDots (&DC, GetSysColor(COLOR_GRAYTEXT));
}
else if (nButtonState == BTN_UP)
DrawDots (&DC, GetSysColor(COLOR_BTNTEXT));
else
ASSERT (FALSE); // Invalid nButtonState
}
DC.SelectObject(pOldBrush);
theBrush.DeleteObject();
// update m_nButtonState
m_nButtonState = nButtonState;
}
void CFileEditCtrl::DrawDots(CDC *pDC, COLORREF CR, int nOffset /* = 0 */)
{
// draw the dots on the button
int width = m_rcButtonArea.Width(); // width of the button
div_t divt = div (width, 4);
int delta = divt.quot; // space between dots
int left = m_rcButtonArea.left + width / 2 - delta - (divt.rem ? 0 : 1); // left side of first dot
width = width / 10; // width and height of one dot
int top = m_rcButtonArea.Height() / 2 - width / 2 + 1; // top of dots
left += nOffset; // draw dots shifted? ( for button pressed )
top += nOffset;
// draw the dots
if (width < 2)
{
pDC->SetPixel(left, top, CR);
left += delta;
pDC->SetPixel(left, top, CR);
left += delta;
pDC->SetPixel(left, top, CR);
}
else
{
CPen thePen(PS_SOLID, 1, CR); // set the dot colour
CPen *pOldPen = pDC->SelectObject(&thePen);
CBrush theBrush(CR);
CBrush *pOldBrush = pDC->SelectObject(&theBrush);
pDC->Ellipse(left, top, left + width, top + width);
left += delta;
pDC->Ellipse(left, top, left + width, top + width);
left += delta;
pDC->Ellipse(left, top, left + width, top + width);
pDC->SelectObject(pOldBrush); // reset the DC
theBrush.DeleteObject();
pDC->SelectObject(pOldPen);
thePen.DeleteObject();
}
}