Enable variadic macros for VC9 and later.

[wxWidgets.git] / src / msw / choice.cpp

diff --git a/src/msw/choice.cpp b/src/msw/choice.cpp
index 3fd0fefc5a338c79101d8e712674737adb03e1ed..0c0dbc10c7bb9e2423707ac252348ceff525d0c0 100644 (file)
--- a/src/msw/choice.cpp
+++ b/src/msw/choice.cpp
@@ -86,10 +86,7 @@ bool wxChoice::CreateAndInit(wxWindow *parent,
 
 
     // initialize the controls contents
-    for ( int i = 0; i < n; i++ )
-    {
-        Append(choices[i]);
-    }
+    Append(n, choices);
 
     // and now we may finally size the control properly (if needed)
     SetInitialSize(size);
@@ -358,6 +355,10 @@ void wxChoice::SetString(unsigned int n, const wxString& s)
     else if ( HasClientObjectData() )
         oldObjData = GetClientObject(n);
 
+    // and also the selection if we're going to delete the item that was
+    // selected
+    const bool wasSelected = static_cast<int>(n) == GetSelection();
+
     ::SendMessage(GetHwnd(), CB_DELETESTRING, n, 0);
     ::SendMessage(GetHwnd(), CB_INSERTSTRING, n, (LPARAM)s.wx_str() );
 
@@ -367,6 +368,11 @@ void wxChoice::SetString(unsigned int n, const wxString& s)
     else if ( oldObjData )
         SetClientObject(n, oldObjData);
 
+    // and the selection
+    if ( wasSelected )
+        SetSelection(n);
+
+    // the width could have changed so the best size needs to be recomputed
     InvalidateBestSize();
 }
 
@@ -408,7 +414,7 @@ void wxChoice::DoSetItemClientData(unsigned int n, void* clientData)
 void* wxChoice::DoGetItemClientData(unsigned int n) const
 {
     LPARAM rc = SendMessage(GetHwnd(), CB_GETITEMDATA, n, 0);
-    if ( rc == CB_ERR )
+    if ( rc == CB_ERR && GetLastError() != ERROR_SUCCESS )
     {
         wxLogLastError(wxT("CB_GETITEMDATA"));
 
@@ -620,6 +626,39 @@ int wxChoice::SetHeightSimpleComboBox(int nItems) const
     return EDIT_HEIGHT_FROM_CHAR_HEIGHT( cy ) * wxMin( wxMax( nItems, 3 ), 6 ) + hItem - 1;
 }
 
+// ----------------------------------------------------------------------------
+// Popup operations
+// ----------------------------------------------------------------------------
+
+void wxChoice::MSWDoPopupOrDismiss(bool show)
+{
+    wxASSERT_MSG( !HasFlag(wxCB_SIMPLE),
+                  wxT("can't popup/dismiss the list for simple combo box") );
+
+    // we *must* set focus to the combobox before showing or hiding the drop
+    // down as without this we get WM_LBUTTONDOWN messages with invalid HWND
+    // when hiding it (whether programmatically or manually) resulting in a
+    // crash when we pass them to IsDialogMessage()
+    //
+    // this can be seen in the combo page of the widgets sample under Windows 7
+    SetFocus();
+
+    ::SendMessage(GetHwnd(), CB_SHOWDROPDOWN, show, 0);
+}
+
+bool wxChoice::Show(bool show)
+{
+    if ( !wxChoiceBase::Show(show) )
+        return false;
+
+    // When hiding the combobox, we also need to hide its popup part as it
+    // doesn't happen automatically.
+    if ( !show && ::SendMessage(GetHwnd(), CB_GETDROPPEDSTATE, 0, 0) )
+        MSWDoPopupOrDismiss(false);
+
+    return true;
+}
+
 // ----------------------------------------------------------------------------
 // MSW message handlers
 // ----------------------------------------------------------------------------
@@ -752,7 +791,7 @@ bool wxChoice::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
 
 WXHBRUSH wxChoice::MSWControlColor(WXHDC hDC, WXHWND hWnd)
 {
-    if ( !IsEnabled() )
+    if ( !IsThisEnabled() )
         return MSWControlColorDisabled(hDC);
 
     return wxChoiceBase::MSWControlColor(hDC, hWnd);