Ensure there is valid context for DrawRectangle

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

diff --git a/src/msw/utilsgui.cpp b/src/msw/utilsgui.cpp
index 9b14ea38ac413831d2b49a05e37cb75594280e83..c4f2a2a112ae230e6662f75fed0d1701e427dfaa 100644 (file)
--- a/src/msw/utilsgui.cpp
+++ b/src/msw/utilsgui.cpp
@@ -1,12 +1,12 @@
 ///////////////////////////////////////////////////////////////////////////////
 ///////////////////////////////////////////////////////////////////////////////

-// Name:        msw/utilsgui.cpp
-// Purpose:     Various utility functions only available in GUI
+// Name:        src/msw/utilsgui.cpp
+// Purpose:     Various utility functions only available in wxMSW GUI

 // Author:      Vadim Zeitlin
 // Modified by:
 // Created:     21.06.2003 (extracted from msw/utils.cpp)
 // RCS-ID:      $Id$
 // Copyright:   (c) Julian Smart
 // Author:      Vadim Zeitlin
 // Modified by:
 // Created:     21.06.2003 (extracted from msw/utils.cpp)
 // RCS-ID:      $Id$
 // Copyright:   (c) Julian Smart

-// License:     wxWindows license
+// Licence:     wxWindows licence

 ///////////////////////////////////////////////////////////////////////////////
 
 // ============================================================================
 ///////////////////////////////////////////////////////////////////////////////
 
 // ============================================================================


@@ -30,119 +30,20 @@
     #include "wx/utils.h"
 #endif //WX_PRECOMP
 
     #include "wx/utils.h"
 #endif //WX_PRECOMP
 

+#include "wx/dynlib.h"
+

 #include "wx/msw/private.h"     // includes <windows.h>
 
 // ============================================================================
 // implementation
 // ============================================================================
 
 #include "wx/msw/private.h"     // includes <windows.h>
 
 // ============================================================================
 // implementation
 // ============================================================================
 

-// ----------------------------------------------------------------------------
-// functions to work with .INI files
-// ----------------------------------------------------------------------------
-
-// Reading and writing resources (eg WIN.INI, .Xdefaults)
-#if wxUSE_RESOURCES
-bool wxWriteResource(const wxString& section, const wxString& entry, const wxString& value, const wxString& file)
-{
-  if (file != wxEmptyString)
-// Don't know what the correct cast should be, but it doesn't
-// compile in BC++/16-bit without this cast.
-#if !defined(__WIN32__)
-    return (WritePrivateProfileString((const char*) section, (const char*) entry, (const char*) value, (const char*) file) != 0);
-#else
-    return (WritePrivateProfileString((LPCTSTR)WXSTRINGCAST section, (LPCTSTR)WXSTRINGCAST entry, (LPCTSTR)value, (LPCTSTR)WXSTRINGCAST file) != 0);
-#endif
-  else
-    return (WriteProfileString((LPCTSTR)WXSTRINGCAST section, (LPCTSTR)WXSTRINGCAST entry, (LPCTSTR)WXSTRINGCAST value) != 0);
-}
-
-bool wxWriteResource(const wxString& section, const wxString& entry, float value, const wxString& file)
-{
-    wxString buf;
-    buf.Printf(wxT("%.4f"), value);
-
-    return wxWriteResource(section, entry, buf, file);
-}
-
-bool wxWriteResource(const wxString& section, const wxString& entry, long value, const wxString& file)
-{
-    wxString buf;
-    buf.Printf(wxT("%ld"), value);
-
-    return wxWriteResource(section, entry, buf, file);
-}
-
-bool wxWriteResource(const wxString& section, const wxString& entry, int value, const wxString& file)
-{
-    wxString buf;
-    buf.Printf(wxT("%d"), value);
-
-    return wxWriteResource(section, entry, buf, file);
-}
-
-bool wxGetResource(const wxString& section, const wxString& entry, wxChar **value, const wxString& file)
+// Emit a beeeeeep
+void wxBell()

 {
 {

-    static const wxChar defunkt[] = wxT("$$default");
-
-    wxChar buf[1024];
-    if (file != wxEmptyString)
-    {
-        int n = GetPrivateProfileString(section, entry, defunkt,
-                                        buf, WXSIZEOF(buf), file);
-        if (n == 0 || wxStrcmp(buf, defunkt) == 0)
-            return FALSE;
-    }
-    else
-    {
-        int n = GetProfileString(section, entry, defunkt, buf, WXSIZEOF(buf));
-        if (n == 0 || wxStrcmp(buf, defunkt) == 0)
-            return FALSE;
-    }
-    if (*value) delete[] (*value);
-    *value = copystring(buf);
-    return TRUE;
+    ::MessageBeep((UINT)-1);        // default sound

 }
 
 }
 

-bool wxGetResource(const wxString& section, const wxString& entry, float *value, const wxString& file)
-{
-    wxChar *s = NULL;
-    bool succ = wxGetResource(section, entry, (wxChar **)&s, file);
-    if (succ)
-    {
-        *value = (float)wxStrtod(s, NULL);
-        delete[] s;
-        return TRUE;
-    }
-    else return FALSE;
-}
-
-bool wxGetResource(const wxString& section, const wxString& entry, long *value, const wxString& file)
-{
-    wxChar *s = NULL;
-    bool succ = wxGetResource(section, entry, (wxChar **)&s, file);
-    if (succ)
-    {
-        *value = wxStrtol(s, NULL, 10);
-        delete[] s;
-        return TRUE;
-    }
-    else return FALSE;
-}
-
-bool wxGetResource(const wxString& section, const wxString& entry, int *value, const wxString& file)
-{
-    wxChar *s = NULL;
-    bool succ = wxGetResource(section, entry, (wxChar **)&s, file);
-    if (succ)
-    {
-        *value = (int)wxStrtol(s, NULL, 10);
-        delete[] s;
-        return TRUE;
-    }
-    else return FALSE;
-}
-#endif // wxUSE_RESOURCES
-

 // ---------------------------------------------------------------------------
 // helper functions for showing a "busy" cursor
 // ---------------------------------------------------------------------------
 // ---------------------------------------------------------------------------
 // helper functions for showing a "busy" cursor
 // ---------------------------------------------------------------------------


@@ -157,7 +58,7 @@ extern HCURSOR wxGetCurrentBusyCursor()
 }
 
 // Set the cursor to the busy cursor for all windows
 }
 
 // Set the cursor to the busy cursor for all windows

-void wxBeginBusyCursor(wxCursor *cursor)
+void wxBeginBusyCursor(const wxCursor *cursor)

 {
     if ( gs_wxBusyCursorCount++ == 0 )
     {
 {
     if ( gs_wxBusyCursorCount++ == 0 )
     {


@@ -184,7 +85,7 @@ void wxEndBusyCursor()
     }
 }
 
     }
 }
 

-// TRUE if we're between the above two calls
+// true if we're between the above two calls

 bool wxIsBusy()
 {
   return gs_wxBusyCursorCount > 0;
 bool wxIsBusy()
 {
   return gs_wxBusyCursorCount > 0;


@@ -194,7 +95,7 @@ bool wxIsBusy()
 // in long calculations.
 bool wxCheckForInterrupt(wxWindow *wnd)
 {
 // in long calculations.
 bool wxCheckForInterrupt(wxWindow *wnd)
 {

-    wxCHECK( wnd, FALSE );
+    wxCHECK( wnd, false );

 
     MSG msg;
     while ( ::PeekMessage(&msg, GetHwndOf(wnd), 0, 0, PM_REMOVE) )
 
     MSG msg;
     while ( ::PeekMessage(&msg, GetHwndOf(wnd), 0, 0, PM_REMOVE) )


@@ -203,48 +104,9 @@ bool wxCheckForInterrupt(wxWindow *wnd)
         ::DispatchMessage(&msg);
     }
 
         ::DispatchMessage(&msg);
     }
 

-    return TRUE;
+    return true;

 }
 
 }
 

-// MSW only: get user-defined resource from the .res file.
-// Returns NULL or newly-allocated memory, so use delete[] to clean up.
-
-#ifndef __WXMICROWIN__
-wxChar *wxLoadUserResource(const wxString& resourceName, const wxString& resourceType)
-{
-    HRSRC hResource = ::FindResource(wxGetInstance(), resourceName, resourceType);
-    if ( hResource == 0 )
-        return NULL;
-
-    HGLOBAL hData = ::LoadResource(wxGetInstance(), hResource);
-    if ( hData == 0 )
-        return NULL;
-
-    wxChar *theText = (wxChar *)::LockResource(hData);
-    if ( !theText )
-        return NULL;
-
-    // Not all compilers put a zero at the end of the resource (e.g. BC++ doesn't).
-    // so we need to find the length of the resource.
-    int len = ::SizeofResource(wxGetInstance(), hResource);
-    wxChar  *s = new wxChar[len+1];
-    wxStrncpy(s,theText,len);
-    s[len]=0;
-
-    // wxChar *s = copystring(theText);
-
-    // Obsolete in WIN32
-#ifndef __WIN32__
-    UnlockResource(hData);
-#endif
-
-    // No need??
-    //  GlobalFree(hData);
-
-    return s;
-}
-#endif // __WXMICROWIN__
-

 // ----------------------------------------------------------------------------
 // get display info
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // get display info
 // ----------------------------------------------------------------------------


@@ -254,20 +116,20 @@ wxChar *wxLoadUserResource(const wxString& resourceName, const wxString& resourc
 void wxGetMousePosition( int* x, int* y )
 {
     POINT pt;
 void wxGetMousePosition( int* x, int* y )
 {
     POINT pt;

-    GetCursorPos( & pt );
+    wxGetCursorPosMSW( & pt );

     if ( x ) *x = pt.x;
     if ( y ) *y = pt.y;
     if ( x ) *x = pt.x;
     if ( y ) *y = pt.y;

-};
+}

 
 

-// Return TRUE if we have a colour display
+// Return true if we have a colour display

 bool wxColourDisplay()
 {
 #ifdef __WXMICROWIN__
     // MICROWIN_TODO
 bool wxColourDisplay()
 {
 #ifdef __WXMICROWIN__
     // MICROWIN_TODO

-    return TRUE;
+    return true;

 #else
     // this function is called from wxDC ctor so it is called a *lot* of times
 #else
     // this function is called from wxDC ctor so it is called a *lot* of times

-    // hence we optimize it a bit but doign the check only once
+    // hence we optimize it a bit but doing the check only once

     //
     // this should be MT safe as only the GUI thread (holding the GUI mutex)
     // can call us
     //
     // this should be MT safe as only the GUI thread (holding the GUI mutex)
     // can call us


@@ -332,24 +194,6 @@ void wxDisplaySizeMM(int *width, int *height)
 #endif
 }
 
 #endif
 }
 

-void wxClientDisplayRect(int *x, int *y, int *width, int *height)
-{
-#if defined(__WIN16__) || defined(__WXMICROWIN__)
-    *x = 0; *y = 0;
-    wxDisplaySize(width, height);
-#else
-    // Determine the desktop dimensions minus the taskbar and any other
-    // special decorations...
-    RECT r;
-
-    SystemParametersInfo(SPI_GETWORKAREA, 0, &r, 0);
-    if (x)      *x = r.left;
-    if (y)      *y = r.top;
-    if (width)  *width = r.right - r.left;
-    if (height) *height = r.bottom - r.top;
-#endif
-}
-

 // ---------------------------------------------------------------------------
 // window information functions
 // ---------------------------------------------------------------------------
 // ---------------------------------------------------------------------------
 // window information functions
 // ---------------------------------------------------------------------------


@@ -361,8 +205,7 @@ wxString WXDLLEXPORT wxGetWindowText(WXHWND hWnd)
     if ( hWnd )
     {
         int len = GetWindowTextLength((HWND)hWnd) + 1;
     if ( hWnd )
     {
         int len = GetWindowTextLength((HWND)hWnd) + 1;

-        ::GetWindowText((HWND)hWnd, str.GetWriteBuf(len), len);
-        str.UngetWriteBuf();
+        ::GetWindowText((HWND)hWnd, wxStringBuffer(str, len), len);

     }
 
     return str;
     }
 
     return str;


@@ -380,9 +223,8 @@ wxString WXDLLEXPORT wxGetWindowClass(WXHWND hWnd)
 
         for ( ;; )
         {
 
         for ( ;; )
         {

-            int count = ::GetClassName((HWND)hWnd, str.GetWriteBuf(len), len);
+            int count = ::GetClassName((HWND)hWnd, wxStringBuffer(str, len), len);

 
 

-            str.UngetWriteBuf();

             if ( count == len )
             {
                 // the class name might have been truncated, retry with larger
             if ( count == len )
             {
                 // the class name might have been truncated, retry with larger


@@ -400,23 +242,17 @@ wxString WXDLLEXPORT wxGetWindowClass(WXHWND hWnd)
     return str;
 }
 
     return str;
 }
 

-WXWORD WXDLLEXPORT wxGetWindowId(WXHWND hWnd)
+int WXDLLEXPORT wxGetWindowId(WXHWND hWnd)

 {
 {

-#ifndef __WIN32__
-    return (WXWORD)GetWindowWord((HWND)hWnd, GWW_ID);
-#else // Win32
-    return (WXWORD)GetWindowLong((HWND)hWnd, GWL_ID);
-#endif // Win16/32
+    return ::GetWindowLong((HWND)hWnd, GWL_ID);

 }
 
 // ----------------------------------------------------------------------------
 // Metafile helpers
 // ----------------------------------------------------------------------------
 
 }
 
 // ----------------------------------------------------------------------------
 // Metafile helpers
 // ----------------------------------------------------------------------------
 

-extern void PixelToHIMETRIC(LONG *x, LONG *y)
+void PixelToHIMETRIC(LONG *x, LONG *y, HDC hdcRef)

 {
 {

-    ScreenHDC hdcRef;
-

     int iWidthMM = GetDeviceCaps(hdcRef, HORZSIZE),
         iHeightMM = GetDeviceCaps(hdcRef, VERTSIZE),
         iWidthPels = GetDeviceCaps(hdcRef, HORZRES),
     int iWidthMM = GetDeviceCaps(hdcRef, HORZSIZE),
         iHeightMM = GetDeviceCaps(hdcRef, VERTSIZE),
         iWidthPels = GetDeviceCaps(hdcRef, HORZRES),


@@ -428,10 +264,8 @@ extern void PixelToHIMETRIC(LONG *x, LONG *y)
     *y /= iHeightPels;
 }
 
     *y /= iHeightPels;
 }
 

-extern void HIMETRICToPixel(LONG *x, LONG *y)
+void HIMETRICToPixel(LONG *x, LONG *y, HDC hdcRef)

 {
 {

-    ScreenHDC hdcRef;
-

     int iWidthMM = GetDeviceCaps(hdcRef, HORZSIZE),
         iHeightMM = GetDeviceCaps(hdcRef, VERTSIZE),
         iWidthPels = GetDeviceCaps(hdcRef, HORZRES),
     int iWidthMM = GetDeviceCaps(hdcRef, HORZSIZE),
         iHeightMM = GetDeviceCaps(hdcRef, VERTSIZE),
         iWidthPels = GetDeviceCaps(hdcRef, HORZRES),


@@ -443,6 +277,16 @@ extern void HIMETRICToPixel(LONG *x, LONG *y)
     *y /= (iHeightMM * 100);
 }
 
     *y /= (iHeightMM * 100);
 }
 

+void HIMETRICToPixel(LONG *x, LONG *y)
+{
+    HIMETRICToPixel(x, y, ScreenHDC());
+}
+
+void PixelToHIMETRIC(LONG *x, LONG *y)
+{
+    PixelToHIMETRIC(x, y, ScreenHDC());
+}
+

 void wxDrawLine(HDC hdc, int x1, int y1, int x2, int y2)
 {
 #ifdef __WXWINCE__
 void wxDrawLine(HDC hdc, int x1, int y1, int x2, int y2)
 {
 #ifdef __WXWINCE__


@@ -458,3 +302,49 @@ void wxDrawLine(HDC hdc, int x1, int y1, int x2, int y2)
 }
 
 
 }
 
 

+// ----------------------------------------------------------------------------
+// Shell API wrappers
+// ----------------------------------------------------------------------------
+
+extern bool wxEnableFileNameAutoComplete(HWND hwnd)
+{
+#if wxUSE_DYNLIB_CLASS
+    typedef HRESULT (WINAPI *SHAutoComplete_t)(HWND, DWORD);
+
+    static SHAutoComplete_t s_pfnSHAutoComplete = NULL;
+    static bool s_initialized = false;
+
+    if ( !s_initialized )
+    {
+        s_initialized = true;
+
+        wxLogNull nolog;
+        wxDynamicLibrary dll(wxT("shlwapi.dll"));
+        if ( dll.IsLoaded() )
+        {
+            s_pfnSHAutoComplete =
+                (SHAutoComplete_t)dll.GetSymbol(wxT("SHAutoComplete"));
+            if ( s_pfnSHAutoComplete )
+            {
+                // won't be unloaded until the process termination, no big deal
+                dll.Detach();
+            }
+        }
+    }
+
+    if ( !s_pfnSHAutoComplete )
+        return false;
+
+    HRESULT hr = s_pfnSHAutoComplete(hwnd, 0x10 /* SHACF_FILESYS_ONLY */);
+    if ( FAILED(hr) )
+    {
+        wxLogApiError(wxT("SHAutoComplete"), hr);
+        return false;
+    }
+
+    return true;
+#else
+    wxUnusedVar(hwnd);
+    return false;
+#endif // wxUSE_DYNLIB_CLASS/!wxUSE_DYNLIB_CLASS
+}