X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/024e9a4cea08387daf5c2027cdc7e098eb563503..a1b2d8d9b9fe8213cf7827a12dee4251d3ea48a7:/src/gtk/combobox.cpp

diff --git a/src/gtk/combobox.cpp b/src/gtk/combobox.cpp
index 3217adb803..c1e77b07d7 100644
--- a/src/gtk/combobox.cpp
+++ b/src/gtk/combobox.cpp
@@ -38,12 +38,13 @@ extern bool g_isIdle;
 //-----------------------------------------------------------------------------
 
 extern bool   g_blockEventsOnDrag;
-static int    g_SelectionBeforePopup = -1;
+static int    g_SelectionBeforePopup = -2; // -2 <=> the popup is hidden
 //-----------------------------------------------------------------------------
 //  "changed" - typing and list item matches get changed, select-child
 //              if it doesn't match an item then just get a single changed
 //-----------------------------------------------------------------------------
 
+extern "C" {
 static void
 gtk_text_changed_callback( GtkWidget *WXUNUSED(widget), wxComboBox *combo )
 {
@@ -62,12 +63,16 @@ gtk_text_changed_callback( GtkWidget *WXUNUSED(widget), wxComboBox *combo )
     event.SetEventObject( combo );
     combo->GetEventHandler()->ProcessEvent( event );
 }
+}
 
+extern "C" {
 static void
 gtk_dummy_callback(GtkEntry *WXUNUSED(entry), GtkCombo *WXUNUSED(combo))
 {
 }
+}
 
+extern "C" {
 static void
 gtk_popup_hide_callback(GtkCombo *WXUNUSED(gtk_combo), wxComboBox *combo)
 {
@@ -83,21 +88,26 @@ gtk_popup_hide_callback(GtkCombo *WXUNUSED(gtk_combo), wxComboBox *combo)
         combo->GetEventHandler()->ProcessEvent( event );
     }
 
-    // reset the selection flag to an identifiable value
-    g_SelectionBeforePopup = -1;
+    // reset the selection flag to an identifiable value (-2 = hidden)
+    g_SelectionBeforePopup = -2;
+}
 }
 
+extern "C" {
 static void
 gtk_popup_show_callback(GtkCombo *WXUNUSED(gtk_combo), wxComboBox *combo)
 {
     // store the combobox selection value before the popup is shown
+  // if there is no selection, combo->GetSelection() returns -1
     g_SelectionBeforePopup = combo->GetSelection();
 }
+}
 
 //-----------------------------------------------------------------------------
 // "select-child" - click/cursor get select-child, changed, select-child
 //-----------------------------------------------------------------------------
 
+extern "C" {
 static void
 gtk_combo_select_child_callback( GtkList *WXUNUSED(list), GtkWidget *WXUNUSED(widget), wxComboBox *combo )
 {
@@ -125,12 +135,12 @@ gtk_combo_select_child_callback( GtkList *WXUNUSED(list), GtkWidget *WXUNUSED(wi
     gtk_signal_connect_after( GTK_OBJECT(GTK_COMBO(combo->GetHandle())->entry), "changed",
       GTK_SIGNAL_FUNC(gtk_text_changed_callback), (gpointer)combo );
 
-    // throw a SELECTED event only if the combobox popup is hidden
+    // throw a SELECTED event only if the combobox popup is hidden (-2)
     // because when combobox popup is shown, gtk_combo_select_child_callback is
     // called each times the mouse is over an item with a pressed button so a lot
     // of SELECTED event could be generated if the user keep the mouse button down
     // and select other items ...
-    if (g_SelectionBeforePopup == -1)
+    if (g_SelectionBeforePopup == -2)
     {
         wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, combo->GetId() );
         event.SetInt( curSelection );
@@ -145,6 +155,7 @@ gtk_combo_select_child_callback( GtkList *WXUNUSED(list), GtkWidget *WXUNUSED(wi
     event2.SetEventObject( combo );
     combo->GetEventHandler()->ProcessEvent( event2 );
 }
+}
 
 //-----------------------------------------------------------------------------
 // wxComboBox