use wxIsNullDouble instead of comparing m_ration with 0

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

diff --git a/src/msw/display.cpp b/src/msw/display.cpp
index 86f353b6d853ecfc40b8741806a2b61bfab8e975..c0e4b959867de43a050167afffd3f74c78856a10 100644 (file)
--- a/src/msw/display.cpp
+++ b/src/msw/display.cpp
@@ -3,6 +3,7 @@
 // Purpose:     MSW Implementation of wxDisplay class
 // Author:      Royce Mitchell III
 // Modified by: VZ (resolutions enumeration/change support, DirectDraw, ...)
 // Purpose:     MSW Implementation of wxDisplay class
 // Author:      Royce Mitchell III
 // Modified by: VZ (resolutions enumeration/change support, DirectDraw, ...)

+//                 Ryan Norton (IsPrimary override)

 // Created:     06/21/02
 // RCS-ID:      $Id$
 // Copyright:   (c) wxWidgets team
 // Created:     06/21/02
 // RCS-ID:      $Id$
 // Copyright:   (c) wxWidgets team


@@ -17,10 +18,6 @@
 // headers
 // ---------------------------------------------------------------------------
 
 // headers
 // ---------------------------------------------------------------------------
 

-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-    #pragma implementation "display.h"
-#endif
-

 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 


@@ -55,6 +52,10 @@
     #pragma warning(disable:4706)
 #endif
 
     #pragma warning(disable:4706)
 #endif
 

+// with mingw32, we must include windows.h first and it doesn't hurt with other
+// compilers
+#include <windows.h>
+

 #include <multimon.h>
 
 #ifdef _MSC_VER
 #include <multimon.h>
 
 #ifdef _MSC_VER


@@ -216,7 +217,7 @@ wxDDEnumExCallback(GUID *pGuid,
     return true;
 }
 
     return true;
 }
 

-HRESULT WINAPI wxDDEnumModesCallback(LPDDSURFACEDESC lpDDSurfaceDesc,  
+HRESULT WINAPI wxDDEnumModesCallback(LPDDSURFACEDESC lpDDSurfaceDesc,

                                      LPVOID lpContext)
 {
     // we need at least the mode size
                                      LPVOID lpContext)
 {
     // we need at least the mode size


@@ -377,10 +378,12 @@ size_t wxDisplayBase::GetCount()
 {
     InitDisplays();
 
 {
     InitDisplays();
 

-    // I'm not sure if they really always return the same thing and if this is
-    // not true I'd like to know in which situation does it happen
-    wxASSERT_MSG( gs_displays->GetCount() == (size_t)::GetSystemMetrics(SM_CMONITORS),
-                    _T("So how many displays does this system have?") );
+    //RN: FIXME:  This is wrong - the display info array should reload after every call
+    //to GetCount() - otherwise it will not be accurate.
+    //The user can change the number of displays in display properties/settings
+    //after GetCount or similar is called and really mess this up...  
+    //wxASSERT_MSG( gs_displays->GetCount() == (size_t)::GetSystemMetrics(SM_CMONITORS),
+    //                _T("So how many displays does this system have?") );

 
     return gs_displays->GetCount();
 }
 
     return gs_displays->GetCount();
 }


@@ -544,6 +547,30 @@ wxString wxDisplay::GetNameForEnumSettings() const
     return name;
 }
 
     return name;
 }
 

+// ----------------------------------------------------------------------------
+// determine if this is the primary display
+// ----------------------------------------------------------------------------
+
+bool wxDisplay::IsPrimary() const
+{
+    wxDisplayInfo& dpyInfo = (*gs_displays)[m_index];
+
+    MONITORINFOEX monInfo;
+    wxZeroMemory(monInfo);
+    monInfo.cbSize = sizeof(monInfo);
+
+    // NB: Cast from MONITORINFOEX* to MONITORINFO* is done because
+    //     Mingw headers - unlike the ones from Microsoft's Platform SDK -
+    //     don't derive the former from the latter in C++ mode and so
+    //     the pointer's type is not converted implicitly.
+    if ( !::GetMonitorInfo(dpyInfo.m_hmon, (LPMONITORINFO)&monInfo) )
+    {
+        wxLogLastError(_T("GetMonitorInfo"));
+    }
+
+    return (monInfo.dwFlags & MONITORINFOF_PRIMARY) == MONITORINFOF_PRIMARY;
+}
+

 // ----------------------------------------------------------------------------
 // video modes enumeration
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // video modes enumeration
 // ----------------------------------------------------------------------------


@@ -658,7 +685,7 @@ bool wxDisplay::DoChangeModeDirectX(const wxVideoMode& mode)
         return false;
     }
 
         return false;
     }
 

-         
+

     return true;
 }
 
     return true;
 }