AuroraMiddleware/wxWidgets
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reset preview bitmap variable to NULL after deleting it

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@10689 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Gilles Depeyrot 2001-06-27 19:44:56 +00:00
parent 0532484d0f
commit 9eee81a4cf
1 changed files with 8 additions and 3 deletions
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11
src/common/prntbase.cpp
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@ -612,7 +612,8 @@ bool wxPrintPreviewBase::SetCurrentPage(int pageNum)
if (m_previewCanvas)
{
RenderPage(pageNum);
if (!RenderPage(pageNum))
return FALSE;
m_previewCanvas->Refresh();
}
return TRUE;
@ -623,7 +624,8 @@ bool wxPrintPreviewBase::PaintPage(wxWindow *canvas, wxDC& dc)
DrawBlankPage(canvas, dc);
if (!m_previewBitmap)
RenderPage(m_currentPage);
if (!RenderPage(m_currentPage))
return FALSE;
if (!m_previewBitmap)
return FALSE;
@ -682,8 +684,10 @@ bool wxPrintPreviewBase::RenderPage(int pageNum)
m_previewBitmap = new wxBitmap((int)actualWidth, (int)actualHeight);
if (!m_previewBitmap || !m_previewBitmap->Ok())
{
if (m_previewBitmap)
if (m_previewBitmap) {
delete m_previewBitmap;
m_previewBitmap = NULL;
}
wxMessageBox(_("Sorry, not enough memory to create a preview."), _("Print Preview Failure"), wxOK);
return FALSE;
}
@ -713,6 +717,7 @@ bool wxPrintPreviewBase::RenderPage(int pageNum)
memoryDC.SelectObject(wxNullBitmap);
delete m_previewBitmap;
m_previewBitmap = NULL;
return FALSE;
}