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More experiments with wxDrawWindowOnDC

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@23349 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Robin Dunn 2003-09-01 19:52:45 +00:00
parent 6e4d60a3b8
commit 208218898b
1 changed files with 70 additions and 4 deletions
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74
wxPython/src/misc2.i
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@ -1723,17 +1723,83 @@ public:
%{
#ifdef __WXMSW__
#include <wx/msw/private.h>
#include <wx/dynload.h>
#endif
%}
%inline %{
void wxDrawWindowOnDC(wxWindow* window, const wxDC& dc)
void wxDrawWindowOnDC(wxWindow* window, const wxDC& dc, int method)
{
#ifdef __WXMSW__
::SendMessage(GetHwndOf(window), WM_PAINT, (long)GetHdcOf(dc), 0);
// ::SendMessage(GetHwndOf(window), WM_PRINTCLIENT, (long)GetHdcOf(dc),
// PRF_CLIENT | PRF_NONCLIENT | PRF_CHILDREN );
switch (method)
{
case 1:
// This one only partially works. Appears to be an undocumented
// "standard" convention that not all widgets adhear to. For
// example, for some widgets backgrounds or non-client areas may
// not be painted.
::SendMessage(GetHwndOf(window), WM_PAINT, (long)GetHdcOf(dc), 0);
break;
case 2:
// This one works much better, except for on XP. On Win2k nearly
// all widgets and their children are captured correctly[**]. On
// XP with Themes activated most native widgets draw only
// partially, if at all. Without themes it works just like on
// Win2k.
//
// ** For example the radio buttons in a wxRadioBox are not its
// children by default, but you can capture it via the panel
// instead, or change RADIOBTN_PARENT_IS_RADIOBOX in radiobox.cpp.
::SendMessage(GetHwndOf(window), WM_PRINT, (long)GetHdcOf(dc),
PRF_CLIENT | PRF_NONCLIENT | PRF_CHILDREN |
PRF_ERASEBKGND | PRF_OWNED );
break;
case 3:
// This one is only defined in the latest SDK and is only
// available on XP. MSDN says it is similar to sending WM_PRINT
// so I expect that it will work similar to the above. Since it
// is avaialble only on XP, it can't be compiled like this and
// will have to be loaded dynamically.
// //::PrintWindow(GetHwndOf(window), GetHdcOf(dc), 0); //break;
// fall through
case 4:
// Use PrintWindow if available, or fallback to WM_PRINT
// otherwise. Unfortunately using PrintWindow is even worse than
// WM_PRINT. For most native widgets nothing is drawn to the dc
// at all, with or without Themes.
typedef BOOL (WINAPI *PrintWindow_t)(HWND, HDC, UINT);
static bool s_triedToLoad = false;
static PrintWindow_t pfnPrintWindow = NULL;
if ( !s_triedToLoad )
{
s_triedToLoad = true;
wxDynamicLibrary dllUser32(_T("user32.dll"));
if ( dllUser32.IsLoaded() )
{
wxLogNull nolog; // Don't report errors here
pfnPrintWindow = (PrintWindow_t)dllUser32.GetSymbol(_T("PrintWindow"));
}
}
if (pfnPrintWindow)
{
printf("Using PrintWindow\n");
pfnPrintWindow(GetHwndOf(window), GetHdcOf(dc), 0);
}
else
{
printf("Using WM_PRINT\n");
::SendMessage(GetHwndOf(window), WM_PRINT, (long)GetHdcOf(dc),
PRF_CLIENT | PRF_NONCLIENT | PRF_CHILDREN | PRF_ERASEBKGND | PRF_OWNED );
}
}
#endif
}