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add a 'Paint background' check menu item in the MyImageFrame class

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@57111 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Francesco Montorsi
2008-12-04 20:49:30 +00:00
parent d4bb7c9334
commit 8b6264b43e
1 changed files with 12 additions and 7 deletions
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19
samples/image/image.cpp
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@@ -152,9 +152,10 @@ private:
enum enum
{ {
ID_ROTATE_LEFT = 100, ID_ROTATE_LEFT = wxID_HIGHEST+1,
ID_ROTATE_RIGHT, ID_ROTATE_RIGHT,
ID_RESIZE ID_RESIZE,
ID_PAINT_BG
}; };
class MyImageFrame : public wxFrame class MyImageFrame : public wxFrame
@@ -170,6 +171,8 @@ public:
wxMenu *menu = new wxMenu; wxMenu *menu = new wxMenu;
menu->Append(wxID_SAVE); menu->Append(wxID_SAVE);
menu->AppendSeparator(); menu->AppendSeparator();
m_pClearBgMenu = menu->AppendCheckItem(ID_PAINT_BG, _T("&Paint background"));
menu->AppendSeparator();
menu->Append(ID_RESIZE, _T("&Fit to window\tCtrl-F")); menu->Append(ID_RESIZE, _T("&Fit to window\tCtrl-F"));
menu->AppendSeparator(); menu->AppendSeparator();
menu->Append(ID_ROTATE_LEFT, _T("Rotate &left\tCtrl-L")); menu->Append(ID_ROTATE_LEFT, _T("Rotate &left\tCtrl-L"));
@@ -184,8 +187,8 @@ public:
SetClientSize(bitmap.GetWidth(), bitmap.GetHeight()); SetClientSize(bitmap.GetWidth(), bitmap.GetHeight());
UpdateStatusBar(); UpdateStatusBar();
SetBackgroundColour(*wxWHITE); // SetBackgroundColour(*wxWHITE);
} }
void OnEraseBackground(wxEraseEvent& WXUNUSED(event)) void OnEraseBackground(wxEraseEvent& WXUNUSED(event))
@@ -196,9 +199,10 @@ public:
void OnPaint(wxPaintEvent& WXUNUSED(event)) void OnPaint(wxPaintEvent& WXUNUSED(event))
{ {
wxPaintDC dc(this); wxPaintDC dc(this);
ClearBackground(); if (m_pClearBgMenu->IsChecked())
ClearBackground();
const wxSize size = GetClientSize(); const wxSize size = GetClientSize();
dc.DrawBitmap(m_bitmap, dc.DrawBitmap(m_bitmap,
(size.x - m_bitmap.GetWidth())/2, (size.x - m_bitmap.GetWidth())/2,
@@ -373,6 +377,7 @@ private:
} }
wxBitmap m_bitmap; wxBitmap m_bitmap;
wxMenuItem* m_pClearBgMenu;
DECLARE_EVENT_TABLE() DECLARE_EVENT_TABLE()
}; };