fixed wxProgressDialog for ranges > 65535

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@13159 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/changes.txt

@@ -73,6 +73,7 @@ wxMSW:
 
 - fixed flicker in wxTreeCtrl::SetItemXXX()
 - fixed redraw problems in dynamically resized wxStaticText
+- fixed wxProgressDialog for ranges > 65535
 
 2.3.2
 -----

include/wx/generic/progdlgg.h

@@ -112,6 +112,12 @@ private:
    // the maximum value
    int m_maximum;
 
+#ifdef __WXMSW__
+   // the factor we use to always keep the value in 16 bit range as the native
+   // control only supports ranges from 0 to 65,535
+   size_t m_factor;
+#endif // __WXMSW__
+
    // for wxPD_APP_MODAL case
    class WXDLLEXPORT wxWindowDisabler *m_winDisabler;
 

src/generic/progdlgg.cpp

@@ -110,6 +110,13 @@ wxProgressDialog::wxProgressDialog(wxString const &title,
     m_state = hasAbortButton ? Continue : Uncancelable;
     m_maximum = maximum;
 
+#ifdef __WXMSW__
+    // we can't have values > 65,536 in the progress control under Windows, so
+    // scale everything down
+    m_factor = m_maximum / 65536 + 1;
+    m_maximum /= m_factor;
+#endif // __WXMSW__
+
     m_parentTop = parent;
     while ( m_parentTop && m_parentTop->GetParent() )
     {
@@ -142,7 +149,7 @@ wxProgressDialog::wxProgressDialog(wxString const &title,
         // note that we can't use wxGA_SMOOTH because it happens to also mean
         // wxDIALOG_MODAL and will cause the dialog to be modal. Have an extra
         // style argument to wxProgressDialog, perhaps.
-        m_gauge = new wxGauge(this, -1, maximum,
+        m_gauge = new wxGauge(this, -1, m_maximum,
                               wxDefaultPosition, wxDefaultSize,
                               wxGA_HORIZONTAL);
 
@@ -305,19 +312,20 @@ bool
 wxProgressDialog::Update(int value, const wxString& newmsg)
 {
     wxASSERT_MSG( value == -1 || m_gauge, wxT("cannot update non existent dialog") );
+
+#ifdef __WXMSW__
+    value /= m_factor;
+#endif // __WXMSW__
+
     wxASSERT_MSG( value <= m_maximum, wxT("invalid progress value") );
 
     if ( m_gauge )
+    {
         m_gauge->SetValue(value + 1);
+    }
 
     if ( !newmsg.IsEmpty() )
     {
-#ifdef __WXMSW__
-        // this seems to be necessary or garbage is left when the new label is
-        // longer than the old one
-        m_msg->SetLabel(wxEmptyString);
-#endif // MSW
-
         m_msg->SetLabel(newmsg);
 
         wxYield();