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Don't crash in toolbar sample if there is no toolbar

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Using many menu commands after removing the toolbar could result in a
crash because they used the toolbar pointer without checking for its
validity.

Add wxEVT_UPDATE_UI handler disabling these commands to prevent this
from happening.

This required rearranging the menu item IDs to allow using a single
range for all of them.
This commit is contained in:
Vadim Zeitlin
2022-03-20 02:38:35 +01:00
parent d17171db26
commit 3ec0697c04
1 changed files with 20 additions and 8 deletions
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28
samples/toolbar/toolbar.cpp
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@@ -151,6 +151,8 @@ public:
void OnUpdateCopyAndCut(wxUpdateUIEvent& event);
void OnUpdateToggleHorzText(wxUpdateUIEvent& event);
void OnUpdateNeedsToolbar(wxUpdateUIEvent& event)
{ event.Enable( GetToolBar() != NULL ); }
void OnUpdateToggleRadioBtn(wxUpdateUIEvent& event)
{ event.Enable( m_tbar != NULL ); }
@@ -206,13 +208,8 @@ enum
IDM_TOOLBAR_TOGGLE_HORIZONTAL_TEXT,
IDM_TOOLBAR_TOGGLE_ANOTHER_TOOLBAR,
IDM_TOOLBAR_TOGGLETOOLBARSIZE,
IDM_TOOLBAR_TOGGLETOOLBARROWS,
IDM_TOOLBAR_TOGGLETOOLTIPS,
IDM_TOOLBAR_TOGGLECUSTOMDISABLED,
IDM_TOOLBAR_SHOW_TEXT,
IDM_TOOLBAR_SHOW_ICONS,
IDM_TOOLBAR_SHOW_BOTH,
IDM_TOOLBAR_BG_COL,
IDM_TOOLBAR_CUSTOM_PATH,
IDM_TOOLBAR_TOP_ORIENTATION,
IDM_TOOLBAR_LEFT_ORIENTATION,
@@ -223,19 +220,31 @@ enum
IDM_TOOLBAR_OTHER_3,
IDM_TOOLBAR_OTHER_4,
// items starting from this one must be disabled when there is no toolbar
IDM_FIRST_NEEDS_TOOLBAR,
IDM_TOOLBAR_TOGGLETOOLBARROWS,
IDM_TOOLBAR_SHOW_TEXT,
IDM_TOOLBAR_SHOW_ICONS,
IDM_TOOLBAR_SHOW_BOTH,
IDM_TOOLBAR_BG_COL,
// tools menu items
IDM_TOOLBAR_ENABLEPRINT,
IDM_TOOLBAR_DELETEPRINT,
IDM_TOOLBAR_INSERTPRINT,
IDM_TOOLBAR_TOGGLEHELP,
IDM_TOOLBAR_TOGGLESEARCH,
IDM_TOOLBAR_TOGGLERADIOBTN1,
IDM_TOOLBAR_TOGGLERADIOBTN2,
IDM_TOOLBAR_TOGGLERADIOBTN3,
IDM_TOOLBAR_CHANGE_TOOLTIP,
IDM_TOOLBAR_INC_TOOL_SPACING,
IDM_TOOLBAR_DEC_TOOL_SPACING,
IDM_LAST_NEEDS_TOOLBAR,
IDM_TOOLBAR_TOGGLERADIOBTN1,
IDM_TOOLBAR_TOGGLERADIOBTN2,
IDM_TOOLBAR_TOGGLERADIOBTN3,
ID_COMBO = 1000
};
@@ -290,6 +299,9 @@ wxBEGIN_EVENT_TABLE(MyFrame, wxFrame)
EVT_UPDATE_UI(wxID_COPY, MyFrame::OnUpdateCopyAndCut)
EVT_UPDATE_UI(wxID_CUT, MyFrame::OnUpdateCopyAndCut)
EVT_UPDATE_UI_RANGE(IDM_FIRST_NEEDS_TOOLBAR,
IDM_LAST_NEEDS_TOOLBAR,
MyFrame::OnUpdateNeedsToolbar)
EVT_UPDATE_UI_RANGE(IDM_TOOLBAR_TOGGLERADIOBTN1,
IDM_TOOLBAR_TOGGLERADIOBTN3,
MyFrame::OnUpdateToggleRadioBtn)