| Forum List • Thread List • Refresh • New Topic • Search • Previous • Next  1  |  1. Printing wxTextCtrl content#4140 | Hi,
I'm working on a small text editor and played around a bit with the printing functions. My problem is the if i want to print the content of a wxTextCtrl the debugger shows me the following error message :
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Program has received a signal-name="SIGSEGV",signal-meaning="Segmentation fault" at MyFrame::Draw(wxDC&)({name="this",value="0x0"},{name="dc",value="@0x19eb4f0"}), file f:\Programmierung\Apps\SmartEdit\main.cpp:622
=========================================================================
The line caused it is (textFenster is a wxTextCtrl...) :
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dc.DrawText(textFenster->GetValue(), 100, 100);
=========================================================================
There are no problems printing any other strings. Made i only a small mistake or is that the compledly wrong way trying to print a wxTextCtrl ? | 2. Re: Printing wxTextCtrl content #4155 Posted by: upCASE 2004-05-17 15:08:13 | Hi!
{name="this",value="0x0"}
If "this" is NULL, that's pretty bad :)
Check if you deleted some pointer accidentaly or pass a NULL pointer.
upCASE
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If it was hard to write, it should be hard to read!- Do. Or do not. There is no try! | 3. Re: Printing wxTextCtrl content #4159 | As far i can see that i haven't. But take a look yourself ... :
============================================================================
// Funktion zum Zeichnen der Seite [Function for drawing the page]
void MyFrame::Draw(wxDC& dc)
{
dc.SetBackground(*wxWHITE_BRUSH);
dc.Clear();
dc.SetFont(wxFont(30, wxSWISS, wxNORMAL, wxNORMAL, FALSE, _T("Lucida Console")));
wxString egal = textFenster->GetValue();
dc.DrawText(egal, 100, 100);
}
// Funktion zum Drucken der Seite [Function for printing the page]
bool MyPrintout::OnPrintPage(int page)
{
wxDC *dc = GetDC();
if (dc)
{
dc->SetDeviceOrigin(0, 0);
dc->SetUserScale(1.0, 1.0);
frame->Draw(*dc);
return TRUE;
}
else
return FALSE;
}
============================================================================
That is the core printing code. Looks right, doesn't it ? | | Forum List • Thread List • Refresh • New Topic • Search • Previous • Next 1 |
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