X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/48fa6bd38ac743f4067e74d4168168ae3a4a068e..f0e5a44df103e880f57416f483e8f3f4b4bc9651:/src/msw/choice.cpp

diff --git a/src/msw/choice.cpp b/src/msw/choice.cpp
index 362f98ccb7..ae626177ce 100644
--- a/src/msw/choice.cpp
+++ b/src/msw/choice.cpp
@@ -141,7 +141,7 @@ bool wxChoice::CreateAndInit(wxWindow *parent,
         return false;
 
     // now create the real HWND
-    if ( !MSWCreateControl(wxT("COMBOBOX"), _T(""), pos, size) )
+    if ( !MSWCreateControl(wxT("COMBOBOX"), wxEmptyString, pos, size) )
         return false;
 
 
@@ -350,7 +350,7 @@ int wxChoice::FindString(const wxString& s) const
    {
      int pos = (int)SendMessage(GetHwnd(), CB_FINDSTRINGEXACT,
                                 (WPARAM)-1, (LPARAM)s.c_str());
- 
+
      return pos == LB_ERR ? wxNOT_FOUND : pos;
    }
 #endif // Watcom/!Watcom
@@ -504,6 +504,23 @@ void wxChoice::DoSetSize(int x, int y,
         const int hItem = SendMessage(GetHwnd(), CB_GETITEMHEIGHT, 0, 0);
         height += hItem*(nItems + 1);
     }
+    else
+    {
+        // We cannot pass wxDefaultCoord as height to wxControl. wxControl uses
+        // wxGetWindowRect() to determine the current height of the combobox,
+        // and then again sets the combobox's height to that value. Unfortunately,
+        // wxGetWindowRect doesn't include the dropdown list's height (at least
+        // on Win2K), so this would result in a combobox with dropdown height of
+        // 1 pixel. We have to determine the default height ourselves and call
+        // wxControl with that value instead.
+        int w, h;
+        RECT r;
+        DoGetSize(&w, &h);
+        if (::SendMessage(GetHwnd(), CB_GETDROPPEDCONTROLRECT, 0, (LPARAM) &r) != 0)
+        {
+            height = h + r.bottom - r.top;
+        }
+    }
 
     wxControl::DoSetSize(x, y, width, height, sizeFlags);