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Fix text drawing in caret sample with wxGTK3 and wxOSX

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Don't use wxClientDC for drawing the text, just refresh the updated
character.

See #17820.
This commit is contained in:
Paul Cornett 2022-03-10 16:18:20 +01:00 committed by Vadim Zeitlin
parent 3533decf93
commit 7463d514bf
1 changed files with 6 additions and 6 deletions
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12
samples/caret/caret.cpp
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@ -473,12 +473,12 @@ void MyCanvas::OnChar( wxKeyEvent &event )
wxChar ch = (wxChar)event.GetKeyCode();
CharAt(m_xCaret, m_yCaret) = ch;
wxCaretSuspend cs(this);
wxClientDC dc(this);
dc.SetFont(m_font);
dc.SetBackgroundMode(wxBRUSHSTYLE_SOLID); // overwrite old value
dc.DrawText(ch, m_xMargin + m_xCaret * m_widthChar,
m_yMargin + m_yCaret * m_heightChar );
wxRect rect(
m_xMargin + m_xCaret * m_widthChar,
m_yMargin + m_yCaret * m_heightChar,
m_widthChar,
m_heightChar);
RefreshRect(rect, false /* don't erase background */);
NextChar();
}