Replaced 'InlineHelp' property attribute with 'Hint'; Use SetHint() wxTextCtrl and wxComboCtrl member function to set it; Added a small section about help string and hint text in propgrid overview

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@62990 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/propgrid/propgrid.h

@@ -87,7 +87,10 @@ public:
     wxPGCachedString    m_strMin;
     wxPGCachedString    m_strMax;
     wxPGCachedString    m_strUnits;
+    wxPGCachedString    m_strHint;
+#if wxPG_COMPATIBILITY_1_4
     wxPGCachedString    m_strInlineHelp;
+#endif
 
     // If true then some things are automatically translated
     bool                m_autoGetTranslation;
@@ -2146,6 +2149,22 @@ inline unsigned int wxPropertyGridPageState::GetActualVirtualHeight() const
 }
 #endif
 
+wxString wxPGProperty::GetHintText() const
+{
+    wxVariant vHintText = GetAttribute(wxPGGlobalVars->m_strHint);
+
+#if wxPG_COMPATIBILITY_1_4
+    // Try the old, deprecated "InlineHelp"
+    if ( vHintText.IsNull() )
+        vHintText = GetAttribute(wxPGGlobalVars->m_strInlineHelp);
+#endif
+
+    if ( !vHintText.IsNull() )
+        return vHintText.GetString();
+
+    return wxEmptyString;
+}
+
 inline int wxPGProperty::GetDisplayedCommonValueCount() const
 {
     if ( HasFlag(wxPG_PROP_USES_COMMON_VALUE) )