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Added demo of strange rectangle behaviour

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@6107 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Julian Smart
2000-02-17 11:04:26 +00:00
parent b54ba67107
commit b14c14ff36
1 changed files with 31 additions and 0 deletions
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31
samples/drawing/drawing.cpp
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@@ -696,6 +696,37 @@ void MyCanvas::DrawDefault(wxDC& dc)
dc.DrawLine(400, 270, 400, 310); dc.DrawLine(400, 270, 400, 310);
dc.DrawLine(300, 300, 410, 300); dc.DrawLine(300, 300, 410, 300);
// Added by JACS to demonstrate bizarre behaviour.
// With a size of 70, we get a missing red RHS,
// and the hight is too small, so we get yellow
// showing. With a size of 40, it draws as expected:
// it just shows a white rectangle with red outline.
int totalWidth = 70;
int totalHeight = 70;
wxBitmap bitmap2(totalWidth, totalHeight);
wxMemoryDC memdc2;
memdc2.SelectObject(bitmap2);
memdc2.SetBackground(*wxWHITE_BRUSH);
// Draw a yellow rectangle filling the bitmap
memdc2.SetPen(wxPen(wxColour(255, 255, 0), 1, wxSOLID));
memdc2.SetBrush(wxBrush(wxColour(255, 255, 0), wxSOLID));
memdc2.DrawRectangle(0, 0, totalWidth+2, totalHeight+2); // Just to make sure!
// Now draw a white rectangle with red outline. It should
// entirely eclipse the yellow background.
memdc2.SetPen(*wxRED_PEN);
memdc2.SetBrush(*wxWHITE_BRUSH);
memdc2.DrawRectangle(0, 0, totalWidth, totalHeight);
memdc2.SelectObject(wxNullBitmap);
memdc2.SetPen(wxNullPen);
memdc2.SetBrush(wxNullBrush);
dc.DrawBitmap(bitmap2, 500, 270);
} }
void MyCanvas::DrawText(wxDC& dc) void MyCanvas::DrawText(wxDC& dc)