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    <p>In the end, it is probably easier to draw what you want into the the printDC. However, with some care, you can use BLIT to copy what is displayed in your panel into the PrintDC without having to redraw everything.</p> <p>So, in your override of the wxPrintout::OnPrintPage you can write something like this:</p> <pre><code> wxClientDC frameDC( wxGetApp().GetTopWindow() ); GetDC()-&gt;StretchBlit(0,0,5000,5000, &amp;frameDC, 0, 0, 500,500 ); </code></pre> <p>This will copy everything displayed in your applications top level wondow into the printerDC.</p> <p>The snag is that the print preview window tends to obliterate your top level frame contents when it pops up. If you have a large monitor and a small application window you can arrange things so they do not overlap</p> <pre><code>void MyFrame::OnPrint(wxCommandEvent&amp; ) { wxPrintPreview *preview = new wxPrintPreview(new MyPrintout(this), new MyPrintout(this)); wxPreviewFrame *frame = new wxPreviewFrame(preview, this, "Demo Print Preview", wxPoint(600, 100), // move preview window out of the way wxSize(500, 500)); //frame-&gt;Centre(wxBOTH); frame-&gt;Initialize(); frame-&gt;Show(true); </code></pre> <p>A better approach would be to BLIT the frame display into a memoryDC before popping up the print preview, then BLIT from the MemoryDC to the printerDC.</p> <p>Something along these lines:</p> <pre><code>void MyFrame::OnPrint(wxCommandEvent&amp; ) { // save the display before it is clobbered by the print preview static wxMemoryDC memDC; static wxBitmap bitmap(500,500); memDC.SelectObject( bitmap ); wxClientDC frameDC( wxGetApp().GetTopWindow() ); memDC.Blit(0,0,5000,5000, &amp;frameDC, 0, 0 ); wxPrintPreview *preview = new wxPrintPreview(new MyPrintout(memDC), new MyPrintout(memDC)); wxPreviewFrame *frame = new wxPreviewFrame(preview, this, "Demo Print Preview", wxPoint(600, 100), // move preview window out of the way wxSize(500, 500)); frame-&gt;Centre(wxBOTH); frame-&gt;Initialize(); frame-&gt;Show(true); } </code></pre> <p>and then</p> <pre><code>class MyPrintout : public wxPrintout { wxMemoryDC &amp; myMemDC; public: MyPrintout( wxMemoryDC &amp; memDC) : myMemDC( memDC ) { } bool OnPrintPage( int PageNum ) { // copy saved dispay to printer DC GetDC()-&gt;StretchBlit(0,0,5000,5000, &amp;myMemDC, 0, 0, 500,500 ); return true; } }; </code></pre>
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    1. POCan you Print a wxWindow in wxWidgets?
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    1. COI understand what you are saying, but I'd like to be able to print things that aren't even displayed. It would be great to be able to sent a DC to the draw routine and let it fill the DC. I don't want to have to do the draw myself, because then I would end up rewriting the controls (fortunately in this example it is mainly just wxGrids) It seems a shame to have draw code that I can't take advantage of.
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