handle correctly never/always shown scrollbars in GetClientSize()

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

diff --git a/src/msw/combobox.cpp b/src/msw/combobox.cpp
index 836db691312eb658dd71a2e031f1272b9133b010..5faed26cb54965906280413dfc47464a2dce36f6 100644 (file)
--- a/src/msw/combobox.cpp
+++ b/src/msw/combobox.cpp
@@ -312,6 +312,18 @@ bool wxComboBox::MSWCommand(WXUINT param, WXWORD id)
 
     switch ( param )
     {
+        case CBN_DROPDOWN:
+            // remember the last selection, just as wxChoice does
+            m_lastAcceptedSelection = GetCurrentSelection();
+            if ( m_lastAcceptedSelection == -1 )
+            {
+                // but unlike with wxChoice we may have no selection but still
+                // have some text and we should avoid erasing it if the drop
+                // down is cancelled (see #8474)
+                m_lastAcceptedSelection = wxID_NONE;
+            }
+            break;
+
         case CBN_SELENDOK:
 #ifndef __SMARTPHONE__
             // we need to reset this to prevent the selection from being undone
@@ -343,6 +355,7 @@ bool wxComboBox::MSWCommand(WXUINT param, WXWORD id)
             // logical as the text does change)
 
         case CBN_EDITCHANGE:
+            if ( m_allowTextEvents )
             {
                 wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, GetId());
 
@@ -364,7 +377,7 @@ bool wxComboBox::MSWCommand(WXUINT param, WXWORD id)
     }
 
     // skip wxChoice version as it would generate its own events for
-    // CBN_SELENDOK
+    // CBN_SELENDOK and also interfere with our handling of CBN_DROPDOWN
     return true;
 }
 
@@ -394,9 +407,13 @@ bool wxComboBox::MSWShouldPreProcessMessage(WXMSG *pMsg)
 
 WXHWND wxComboBox::GetEditHWNDIfAvailable() const
 {
-    // we assume that the only child of the combobox is the edit window so it's
-    // unnecessary to pass "EDIT" as class name parameter
-    return (WXHWND)::FindWindowEx(GetHwnd(), NULL, NULL, NULL);
+    // notice that a slightly safer alternative could be to use FindWindowEx()
+    // but it's not available under WinCE so just take the first child for now
+    // to keep one version of the code for all platforms and fix it later if
+    // problems are discovered
+
+    // we assume that the only child of the combobox is the edit window
+    return (WXHWND)::GetWindow(GetHwnd(), GW_CHILD);
 }
 
 WXHWND wxComboBox::GetEditHWND() const
@@ -577,15 +594,12 @@ void wxComboBox::OnRedo(wxCommandEvent& WXUNUSED(event))
 
 void wxComboBox::OnDelete(wxCommandEvent& WXUNUSED(event))
 {
-    long from, to;
-    GetSelection(& from, & to);
-    if (from != -1 && to != -1)
-        Remove(from, to);
+    RemoveSelection();
 }
 
 void wxComboBox::OnSelectAll(wxCommandEvent& WXUNUSED(event))
 {
-    SetSelection(-1, -1);
+    SelectAll();
 }
 
 void wxComboBox::OnUpdateCut(wxUpdateUIEvent& event)
@@ -620,7 +634,7 @@ void wxComboBox::OnUpdateDelete(wxUpdateUIEvent& event)
 
 void wxComboBox::OnUpdateSelectAll(wxUpdateUIEvent& event)
 {
-    event.Enable(IsEditable() && GetLastPosition() > 0);
+    event.Enable(IsEditable() && !wxTextEntry::IsEmpty());
 }
 
 #if wxUSE_TOOLTIPS