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

diff --git a/src/msw/choice.cpp b/src/msw/choice.cpp
index 92cab89387a009ef064bd78136d9f2e6511a263c..2c5fd437f1e6134154ab92267be4b0883762281b 100644 (file)
--- a/src/msw/choice.cpp
+++ b/src/msw/choice.cpp
@@ -32,13 +32,12 @@
     #include "wx/choice.h"
     #include "wx/utils.h"
     #include "wx/log.h"
+    #include "wx/settings.h"
 #endif
 
 #include "wx/msw/private.h"
 
-#if !USE_SHARED_LIBRARY
     IMPLEMENT_DYNAMIC_CLASS(wxChoice, wxControl)
-#endif
 
 // ============================================================================
 // implementation
@@ -60,7 +59,7 @@ bool wxChoice::Create(wxWindow *parent,
     if ( !CreateControl(parent, id, pos, size, style, validator, name) )
         return FALSE;
 
-    long msStyle = WS_CHILD | CBS_DROPDOWNLIST | WS_TABSTOP | WS_VISIBLE;
+    long msStyle = WS_CHILD | CBS_DROPDOWNLIST | WS_TABSTOP | WS_VISIBLE | WS_HSCROLL | WS_VSCROLL;
     if ( style & wxCB_SORT )
         msStyle |= CBS_SORT;
 
@@ -69,12 +68,16 @@ bool wxChoice::Create(wxWindow *parent,
     wxASSERT_MSG( !(style & wxCB_DROPDOWN) &&
                   !(style & wxCB_READONLY) &&
                   !(style & wxCB_SIMPLE),
-                  _T("this style flag is ignored by wxChoice, you "
+                  wxT("this style flag is ignored by wxChoice, you "
                      "probably want to use a wxComboBox") );
 
-    if ( !MSWCreateControl(_T("COMBOBOX"), msStyle) )
+    if ( !MSWCreateControl(wxT("COMBOBOX"), msStyle) )
         return FALSE;
 
+    // A choice/combobox normally has a white background (or other, depending
+    // on global settings) rather than inheriting the parent's background colour.
+    SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW));
+
     for ( int i = 0; i < n; i++ )
     {
         Append(choices[i]);
@@ -85,27 +88,57 @@ bool wxChoice::Create(wxWindow *parent,
     return TRUE;
 }
 
+wxChoice::~wxChoice()
+{
+    Free();
+}
+
 // ----------------------------------------------------------------------------
 // adding/deleting items to/from the list
 // ----------------------------------------------------------------------------
 
-void wxChoice::DoAppend(const wxString& item)
+int wxChoice::DoAppend(const wxString& item)
 {
-    SendMessage(GetHwnd(), CB_ADDSTRING, 0, (LONG)item.c_str());
+    int n = (int)SendMessage(GetHwnd(), CB_ADDSTRING, 0, (LONG)item.c_str());
+    if ( n == CB_ERR )
+    {
+        wxLogLastError("SendMessage(CB_ADDSTRING)");
+    }
+
+    return n;
 }
 
 void wxChoice::Delete(int n)
 {
-    wxCHECK_RET( n < GetCount(), _T("invalid item index in wxChoice::Delete") );
+    wxCHECK_RET( n < GetCount(), wxT("invalid item index in wxChoice::Delete") );
+
+    if ( HasClientObjectData() )
+    {
+        delete GetClientObject(n);
+    }
 
     SendMessage(GetHwnd(), CB_DELETESTRING, n, 0);
 }
 
 void wxChoice::Clear()
 {
+    Free();
+
     SendMessage(GetHwnd(), CB_RESETCONTENT, 0, 0);
 }
 
+void wxChoice::Free()
+{
+    if ( HasClientObjectData() )
+    {
+        size_t count = GetCount();
+        for ( size_t n = 0; n < count; n++ )
+        {
+            delete GetClientObject(n);
+        }
+    }
+}
+
 // ----------------------------------------------------------------------------
 // selection
 // ----------------------------------------------------------------------------
@@ -151,18 +184,28 @@ int wxChoice::FindString(const wxString& s) const
 #endif // Watcom/!Watcom
 }
 
+void wxChoice::SetString(int n, const wxString& s)
+{
+    wxFAIL_MSG(wxT("not implemented"));
+
+#if 0 // should do this, but no Insert() so far
+    Delete(n);
+    Insert(n + 1, s);
+#endif
+}
+
 wxString wxChoice::GetString(int n) const
 {
     size_t len = (size_t)::SendMessage(GetHwnd(), CB_GETLBTEXTLEN, n, 0);
     wxString str;
-    if ( ::SendMessage(GetHwnd(), CB_GETLBTEXT, n,
-                       (LPARAM)str.GetWriteBuf(len)) == CB_ERR )
-    {
-        wxLogLastError("SendMessage(CB_GETLBTEXT)");
+    if (len) {
+        if ( ::SendMessage(GetHwnd(), CB_GETLBTEXT, n,
+                           (LPARAM)str.GetWriteBuf(len)) == CB_ERR ) {
+            wxLogLastError("SendMessage(CB_GETLBTEXT)");
+        }
+        str.UngetWriteBuf();
     }
 
-    str.UngetWriteBuf();
-
     return str;
 }
 
@@ -170,36 +213,36 @@ wxString wxChoice::GetString(int n) const
 // client data
 // ----------------------------------------------------------------------------
 
-void wxChoice::DoSetClientData( int n, void* clientData )
+void wxChoice::DoSetItemClientData( int n, void* clientData )
 {
     if ( SendMessage(GetHwnd(), CB_SETITEMDATA, n, (LPARAM)clientData) == CB_ERR )
     {
-        wxLogLastError(_T("CB_SETITEMDATA"));
+        wxLogLastError(wxT("CB_SETITEMDATA"));
     }
 }
 
-void* wxChoice::DoGetClientData( int n ) const
+void* wxChoice::DoGetItemClientData( int n ) const
 {
     LPARAM rc = SendMessage(GetHwnd(), CB_GETITEMDATA, n, 0);
     if ( rc == CB_ERR )
     {
-        wxLogLastError(_T("CB_GETITEMDATA"));
+        wxLogLastError(wxT("CB_GETITEMDATA"));
 
         // unfortunately, there is no way to return an error code to the user
-        rc = NULL;
+        rc = (LPARAM) NULL;
     }
 
     return (void *)rc;
 }
 
-void wxChoice::DoSetClientObject( int n, wxClientData* clientData )
+void wxChoice::DoSetItemClientObject( int n, wxClientData* clientData )
 {
-    DoSetClientData(n, clientData);
+    DoSetItemClientData(n, clientData);
 }
 
-wxClientData* wxChoice::DoGetClientObject( int n ) const
+wxClientData* wxChoice::DoGetItemClientObject( int n ) const
 {
-    return (wxClientData *)DoGetClientData(n);
+    return (wxClientData *)DoGetItemClientData(n);
 }
 
 // ----------------------------------------------------------------------------
@@ -277,11 +320,19 @@ bool wxChoice::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
         return FALSE;
     }
 
-    wxCommandEvent event(wxEVT_COMMAND_CHOICE_SELECTED, m_windowId);
-    event.SetInt(GetSelection());
-    event.SetEventObject(this);
-    event.SetString(GetStringSelection());
-    ProcessCommand(event);
+    int n = GetSelection();
+    if (n > -1)
+    {
+        wxCommandEvent event(wxEVT_COMMAND_CHOICE_SELECTED, m_windowId);
+        event.SetInt(n);
+        event.SetEventObject(this);
+        event.SetString(GetStringSelection());
+        if ( HasClientObjectData() )
+            event.SetClientObject( GetClientObject(n) );
+        else if ( HasClientUntypedData() )
+            event.SetClientData( GetClientData(n) );
+        ProcessCommand(event);
+    }
 
     return TRUE;
 }