Add the ability to show a CallTip in the stc sample.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75455 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

samples/stc/edit.cpp

@@ -112,6 +112,8 @@ BEGIN_EVENT_TABLE (Edit, wxStyledTextCtrl)
     EVT_STC_MARGINCLICK (wxID_ANY,     Edit::OnMarginClick)
     EVT_STC_CHARADDED (wxID_ANY,       Edit::OnCharAdded)
     EVT_STC_KEY( wxID_ANY , Edit::OnKey )
+
+    EVT_KEY_DOWN( Edit::OnKeyDown )
 END_EVENT_TABLE()
 
 Edit::Edit (wxWindow *parent, wxWindowID id,
@@ -210,6 +212,22 @@ void Edit::OnKey (wxStyledTextEvent &WXUNUSED(event))
     wxMessageBox("OnKey");
 }
 
+void Edit::OnKeyDown (wxKeyEvent &event)
+{
+    if (CallTipActive())
+        CallTipCancel();
+    if (event.GetKeyCode() == WXK_SPACE && event.ControlDown() && event.ShiftDown())
+    {
+        int pos = GetCurrentPos();
+        CallTipSetBackground(*wxYELLOW);
+        CallTipShow(pos,
+                    "This is a CallTip with multiple lines.\n"
+                    "It is meant to be a context sensitive popup helper for the user.");
+        return;
+    }
+    event.Skip();
+}
+
 void Edit::OnEditCut (wxCommandEvent &WXUNUSED(event)) {
     if (GetReadOnly() || (GetSelectionEnd()-GetSelectionStart() <= 0)) return;
     Cut ();

samples/stc/edit.h

@@ -103,6 +103,8 @@ public:
     void OnCharAdded  (wxStyledTextEvent &event);
     void OnKey  (wxStyledTextEvent &event);
 
+    void OnKeyDown(wxKeyEvent &event);
+
     //! language/lexer
     wxString DeterminePrefs (const wxString &filename);
     bool InitializePrefs (const wxString &filename);