Avoid an assert in wxFrame::SetTitle

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

diff --git a/src/msw/dirdlg.cpp b/src/msw/dirdlg.cpp
index 00f01d719f31f4caaa695f32bf0caad75164365f..30a877ce8326ace3968a0f4e03c9cb46da709c76 100644 (file)
--- a/src/msw/dirdlg.cpp
+++ b/src/msw/dirdlg.cpp
@@ -5,7 +5,7 @@
 // Modified by:
 // Created:     01/02/97
 // RCS-ID:      $Id$
-// Copyright:   (c) Julian Smart and Markus Holzem
+// Copyright:   (c) Julian Smart
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
@@ -17,7 +17,7 @@
 // headers
 // ----------------------------------------------------------------------------
 
-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
     #pragma implementation "dirdlg.h"
 #endif
 
@@ -42,6 +42,11 @@
 
 #include "wx/msw/private.h"
 
+#ifdef __WXWINCE__
+#include <winreg.h>
+#include <objbase.h>
+#include <shlguid.h>
+#endif
 #include <shlobj.h> // Win95 shell
 
 // ----------------------------------------------------------------------------
@@ -52,8 +57,20 @@
     #define MAX_PATH 4096      // be generous
 #endif
 
+#ifndef BIF_NEWDIALOGSTYLE
+    #define BIF_NEWDIALOGSTYLE 0x0040
+#endif
+
+#ifndef BIF_NONEWFOLDERBUTTON
+    #define BIF_NONEWFOLDERBUTTON  0x0200
+#endif
+
+#ifndef BIF_EDITBOX
+    #define BIF_EDITBOX 16
+#endif
+
 // ----------------------------------------------------------------------------
-// wxWindows macros
+// wxWidgets macros
 // ----------------------------------------------------------------------------
 
 IMPLEMENT_CLASS(wxDirDialog, wxDialog)
@@ -115,10 +132,6 @@ void wxDirDialog::SetPath(const wxString& path)
     }
 }
 
-#ifndef BIF_NEWDIALOGSTYLE
-#define BIF_NEWDIALOGSTYLE 0x0040
-#endif
-
 int wxDirDialog::ShowModal()
 {
     wxWindow *parent = GetParent();
@@ -127,17 +140,50 @@ int wxDirDialog::ShowModal()
     bi.hwndOwner      = parent ? GetHwndOf(parent) : NULL;
     bi.pidlRoot       = NULL;
     bi.pszDisplayName = NULL;
+#ifdef __WXWINCE__
+    bi.lpszTitle      = m_message.mb_str();
+#else
     bi.lpszTitle      = m_message.c_str();
+#endif
     bi.ulFlags        = BIF_RETURNONLYFSDIRS | BIF_STATUSTEXT;
     bi.lpfn           = BrowseCallbackProc;
     bi.lParam         = (LPARAM)m_path.c_str();    // param for the callback
 
-    if ((GetStyle() & wxDD_NEW_DIR_BUTTON) &&
-        (wxApp::GetComCtl32Version() >= 500))
+    static const int verComCtl32 = wxApp::GetComCtl32Version();
+
+    // we always add the edit box (it doesn't hurt anybody, does it?) if it is
+    // supported by the system
+    if ( verComCtl32 >= 471 )
     {
-        bi.ulFlags |= BIF_NEWDIALOGSTYLE;
+        bi.ulFlags |= BIF_EDITBOX;
     }
 
+    // to have the "New Folder" button we must use the "new" dialog style which
+    // is also the only way to have a resizable dialog
+    //
+    // "new" style is only available in the version 5.0+ of comctl32.dll
+    const bool needNewDir = HasFlag(wxDD_NEW_DIR_BUTTON);
+    if ( (needNewDir || HasFlag(wxRESIZE_BORDER)) && (verComCtl32 >= 500) )
+    {
+        if (needNewDir)
+        {
+            bi.ulFlags |= BIF_NEWDIALOGSTYLE;
+        }
+        else
+        {
+            // Versions < 600 doesn't support BIF_NONEWFOLDERBUTTON
+            // The only way to get rid of the Make New Folder button is use
+            // the old dialog style which doesn't have the button thus we
+            // simply don't set the New Dialog Style for such comctl versions.
+            if (verComCtl32 >= 600)
+            {
+                bi.ulFlags |= BIF_NEWDIALOGSTYLE;
+                bi.ulFlags |= BIF_NONEWFOLDERBUTTON;
+            }
+        }
+    }
+
+    // do show the dialog
     LPITEMIDLIST pidl = SHBrowseForFolder(&bi);
 
     if ( bi.pidlRoot )
@@ -151,8 +197,7 @@ int wxDirDialog::ShowModal()
         return wxID_CANCEL;
     }
 
-    BOOL ok = SHGetPathFromIDList(pidl, m_path.GetWriteBuf(MAX_PATH));
-    m_path.UngetWriteBuf();
+    BOOL ok = SHGetPathFromIDList(pidl, wxStringBuffer(m_path, MAX_PATH));
 
     ItemListFree(pidl);
 
@@ -180,23 +225,36 @@ BrowseCallbackProc(HWND hwnd, UINT uMsg, LPARAM lp, LPARAM pData)
             // initial selection here
             //
             // wParam = TRUE => lParam is a string and not a PIDL
+#ifndef __WXWINCE__
             SendMessage(hwnd, BFFM_SETSELECTION, TRUE, pData);
+#endif
             break;
 
         case BFFM_SELCHANGED:
+            // note that this doesn't work with the new style UI (MSDN doesn't
+            // say anything about it, but the comments in shlobj.h do!) but we
+            // still execute this code in case it starts working again with the
+            // "new new UI" (or would it be "NewUIEx" according to tradition?)
             {
                 // Set the status window to the currently selected path.
-                TCHAR szDir[MAX_PATH];
-                if ( SHGetPathFromIDList((LPITEMIDLIST)lp, szDir) )
+                wxString strDir;
+                if ( SHGetPathFromIDList((LPITEMIDLIST)lp,
+                                         wxStringBuffer(strDir, MAX_PATH)) )
                 {
-                    wxString strDir(szDir);
-                    int maxChars = 40; // Have to truncate string else it displays incorrectly
-                    if (strDir.Len() > (size_t) (maxChars - 3))
+                    // NB: this shouldn't be necessary with the new style box
+                    //     (which is resizable), but as for now it doesn't work
+                    //     anyhow (see the comment above) no harm in doing it
+
+                    // need to truncate or it displays incorrectly
+                    static const size_t maxChars = 37;
+                    if ( strDir.length() > maxChars )
                     {
-                        strDir = strDir.Right(maxChars - 3);
+                        strDir = strDir.Right(maxChars);
                         strDir = wxString(wxT("...")) + strDir;
                     }
-                    SendMessage(hwnd, BFFM_SETSTATUSTEXT, 0, (LPARAM) (const wxChar*) strDir);
+
+                    SendMessage(hwnd, BFFM_SETSTATUSTEXT,
+                                0, (LPARAM)strDir.c_str());
                 }
             }
             break;