Ensure there is valid context for DrawRectangle

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

diff --git a/src/msw/helpwin.cpp b/src/msw/helpwin.cpp
index b2d56135569828ae6348cba1413b52dd7f4e625f..f3795942288b2287801f053bfeaaa21534a58016 100644 (file)
--- a/src/msw/helpwin.cpp
+++ b/src/msw/helpwin.cpp
@@ -1,32 +1,27 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        helpwin.cpp
+// Name:        src/msw/helpwin.cpp
 // Purpose:     Help system: WinHelp implementation
 // Author:      Julian Smart
 // Modified by:
 // Created:     04/01/98
 // RCS-ID:      $Id$
 // Copyright:   (c) Julian Smart
-// Licence:    wxWindows licence
+// Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-#pragma implementation "helpwin.h"
-#endif
-
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 #ifdef __BORLANDC__
-#pragma hdrstop
+    #pragma hdrstop
 #endif
 
+#if wxUSE_HELP
+
 #ifndef WX_PRECOMP
-#include "wx/defs.h"
 #endif
 
-#if wxUSE_HELP
-
-#include "wx/filefn.h"
+#include "wx/filename.h"
 #include "wx/msw/helpwin.h"
 
 #include <time.h>
@@ -37,9 +32,11 @@
 
 #include <string.h>
 
-static HWND GetSuitableHWND()
+static HWND GetSuitableHWND(wxWinHelpController* controller)
 {
-    if (wxTheApp->GetTopWindow())
+    if (controller->GetParentWindow())
+        return (HWND) controller->GetParentWindow()->GetHWND();
+    else if (wxTheApp->GetTopWindow())
         return (HWND) wxTheApp->GetTopWindow()->GetHWND();
     else
         return GetDesktopWindow();
@@ -50,77 +47,75 @@ IMPLEMENT_DYNAMIC_CLASS(wxWinHelpController, wxHelpControllerBase)
 bool wxWinHelpController::Initialize(const wxString& filename)
 {
     m_helpFile = filename;
-    return TRUE;
+    return true;
 }
 
 bool wxWinHelpController::LoadFile(const wxString& file)
 {
-    if (!file.IsEmpty())
+    if (!file.empty())
         m_helpFile = file;
-    return TRUE;
+    return true;
 }
 
 bool wxWinHelpController::DisplayContents(void)
 {
-    if (m_helpFile.IsEmpty()) return FALSE;
-    
+    if (m_helpFile.empty()) return false;
+
     wxString str = GetValidFilename(m_helpFile);
-    
-#if defined(__WIN95__)
-    return (WinHelp(GetSuitableHWND(), (const wxChar*) str, HELP_FINDER, 0L) != 0);
-#else
-    return (WinHelp(GetSuitableHWND(), (const wxChar*) str, HELP_CONTENTS, 0L) != 0);
-#endif
+
+    return (WinHelp(GetSuitableHWND(this), str.t_str(), HELP_FINDER, 0L) != 0);
 }
 
 bool wxWinHelpController::DisplaySection(int section)
 {
     // Use context number
-    if (m_helpFile.IsEmpty()) return FALSE;
-    
+    if (m_helpFile.empty()) return false;
+
     wxString str = GetValidFilename(m_helpFile);
 
-    return (WinHelp((HWND) wxTheApp->GetTopWindow()->GetHWND(), (const wxChar*) str, HELP_CONTEXT, (DWORD)section) != 0);
+    return (WinHelp(GetSuitableHWND(this), str.t_str(), HELP_CONTEXT, (DWORD)section) != 0);
 }
 
 bool wxWinHelpController::DisplayContextPopup(int contextId)
 {
-    if (m_helpFile.IsEmpty()) return FALSE;
-    
+    if (m_helpFile.empty()) return false;
+
     wxString str = GetValidFilename(m_helpFile);
 
-    return (WinHelp((HWND) wxTheApp->GetTopWindow()->GetHWND(), (const wxChar*) str, HELP_CONTEXTPOPUP, (DWORD) contextId) != 0);
+    return (WinHelp(GetSuitableHWND(this), str.t_str(), HELP_CONTEXTPOPUP, (DWORD) contextId) != 0);
 }
 
 bool wxWinHelpController::DisplayBlock(long block)
 {
     DisplaySection(block);
-    return TRUE;
+    return true;
 }
 
-bool wxWinHelpController::KeywordSearch(const wxString& k)
+bool wxWinHelpController::KeywordSearch(const wxString& k,
+                                        wxHelpSearchMode WXUNUSED(mode))
 {
-    if (m_helpFile.IsEmpty()) return FALSE;
-    
+    if (m_helpFile.empty()) return false;
+
     wxString str = GetValidFilename(m_helpFile);
-    
-    return (WinHelp(GetSuitableHWND(), (const wxChar*) str, HELP_PARTIALKEY, (DWORD)(const wxChar*) k) != 0);
+
+    return WinHelp(GetSuitableHWND(this), str.t_str(), HELP_PARTIALKEY,
+                   (ULONG_PTR)wxMSW_CONV_LPCTSTR(k)) != 0;
 }
 
 // Can't close the help window explicitly in WinHelp
 bool wxWinHelpController::Quit(void)
 {
-    return (WinHelp(GetSuitableHWND(), 0, HELP_QUIT, 0L) != 0);
+    return WinHelp(GetSuitableHWND(this), 0, HELP_QUIT, 0) != 0;
 }
 
 // Append extension if necessary.
 wxString wxWinHelpController::GetValidFilename(const wxString& file) const
 {
     wxString path, name, ext;
-    wxSplitPath(file, & path, & name, & ext);
+    wxFileName::SplitPath(file, & path, & name, & ext);
 
     wxString fullName;
-    if (path.IsEmpty())
+    if (path.empty())
         fullName = name + wxT(".hlp");
     else if (path.Last() == wxT('\\'))
         fullName = path + name + wxT(".hlp");