Forum

 

Hallo,

how to modify thin border in CExtPropertyGridCtrl in order to inflate its rect for 1 pixel in all 4 directions? I allready have my own class derived.

Thanks!

This thin border is painted by the CExtPaintManager::PaintResizableBarChildNcAreaRect() virtual method. Each CExtPropertyGridWnd tree grid window inside the CExtPropertyGridCtrl container handles the WM_NCCALCSIZE and WM_NCPAINT standard windows messages for implementing a thin border.

Here is the source code of these methods:

void CExtPropertyGridWnd::OnNcCalcSize(    
    BOOL bCalcValidRects,    
    NCCALCSIZE_PARAMS FAR * lpncsp    
    )
{    
    ASSERT_VALID( this );    
    bCalcValidRects;    
    lpncsp->rgrc[0].left++;    
    lpncsp->rgrc[0].top++;    
    lpncsp->rgrc[0].right--;    
    lpncsp->rgrc[0].bottom--;
}
 
void CExtPropertyGridWnd::OnNcPaint() 
{    
    ASSERT_VALID( this );
    CWindowDC dcWindow( this );
    CRect rcClient, rcBar;    
    GetClientRect( rcClient );    
    ClientToScreen( rcClient );    
    GetWindowRect( rcBar );    
    rcClient.OffsetRect( -rcBar.TopLeft() );    
    rcBar.OffsetRect( -rcBar.TopLeft() );    
    dcWindow.ExcludeClipRect(rcClient);
    CExtMemoryDC dc( &dcWindow, &rcBar );    
    g_PaintManager->PaintResizableBarChildNcAreaRect( dc, rcBar, this );
}

You can also use the CExtWRB template class to add a stylish border to the window.