/////////////////////////////////////////////////////////////////////////////
-// Name: display.cpp
+// Name: src/msw/display.cpp
// Purpose: MSW Implementation of wxDisplay class
-// Author: Royce Mitchell III
-// Modified by:
+// Author: Royce Mitchell III, Vadim Zeitlin
+// Modified by: Ryan Norton (IsPrimary override)
// Created: 06/21/02
// RCS-ID: $Id$
-// Copyright: (c) wxWindows team
+// Copyright: (c) wxWidgets team
+// Copyright: (c) 2002-2006 wxWidgets team
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// headers
// ---------------------------------------------------------------------------
-#ifdef __GNUG__
- #pragma implementation "display.h"
-#endif
-
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#if wxUSE_DISPLAY
-#ifndef WX_PRECOMP
- #include "wx/dynarray.h"
-#endif
-
-#include "wx/dynload.h"
-
#include "wx/display.h"
-// the following define is necessary to access the multi-monitor function
-// declarations in a manner safe to use w/ Windows 95
-#define COMPILE_MULTIMON_STUBS
-
-// if you don't have multimon.h you can download the file from:
-//
-// http://www.microsoft.com/msj/0697/monitor/monitortextfigs.htm#fig4
-//
-
-#ifdef _MSC_VER
- // as (m)any standard header, this one doesn't compile without warnings
- // with VC++ 6 <sigh>
- #pragma warning(disable:4706)
-#endif
-
-#include <multimon.h>
-
-#ifdef _MSC_VER
- #pragma warning(default:4706)
+#ifndef WX_PRECOMP
+ #include "wx/dynarray.h"
+ #include "wx/app.h"
+ #include "wx/frame.h"
#endif
-#ifdef _UNICODE
- #define MAKE_WFUNC(x) #x "W"
- #define WINFUNC(x) L ## MAKE_WFUNC(x)
+#include "wx/dynload.h"
+#include "wx/sysopt.h"
+
+#include "wx/display_impl.h"
+#include "wx/msw/wrapwin.h"
+#include "wx/msw/missing.h"
+#include "wx/msw/private.h"
+#include "wx/msw/private/hiddenwin.h"
+
+#ifndef __WXWINCE__
+ // Older versions of windef.h don't define HMONITOR. Unfortunately, we
+ // can't directly test whether HMONITOR is defined or not in windef.h as
+ // it's not a macro but a typedef, so we test for an unrelated symbol which
+ // is only defined in winuser.h if WINVER >= 0x0500
+ #if !defined(HMONITOR_DECLARED) && !defined(MNS_NOCHECK)
+ DECLARE_HANDLE(HMONITOR);
+ typedef BOOL(CALLBACK * MONITORENUMPROC )(HMONITOR, HDC, LPRECT, LPARAM);
+ typedef struct tagMONITORINFO
+ {
+ DWORD cbSize;
+ RECT rcMonitor;
+ RECT rcWork;
+ DWORD dwFlags;
+ } MONITORINFO, *LPMONITORINFO;
+ typedef struct tagMONITORINFOEX : public tagMONITORINFO
+ {
+ TCHAR szDevice[CCHDEVICENAME];
+ } MONITORINFOEX, *LPMONITORINFOEX;
+ #define MONITOR_DEFAULTTONULL 0x00000000
+ #define MONITOR_DEFAULTTOPRIMARY 0x00000001
+ #define MONITOR_DEFAULTTONEAREST 0x00000002
+ #define MONITORINFOF_PRIMARY 0x00000001
+ #define HMONITOR_DECLARED
+ #endif
+#endif // !__WXWINCE__
+
+// display functions are found in different DLLs under WinCE and normal Win32
+#ifdef __WXWINCE__
+static const wxChar displayDllName[] = wxT("coredll.dll");
#else
- #define WINFUNC(x) #x "A"
+static const wxChar displayDllName[] = wxT("user32.dll");
#endif
// ----------------------------------------------------------------------------
-// typedefs
+// typedefs for dynamically loaded Windows functions
// ----------------------------------------------------------------------------
typedef LONG (WINAPI *ChangeDisplaySettingsEx_t)(LPCTSTR lpszDeviceName,
DWORD dwFlags,
LPVOID lParam);
+typedef BOOL (WINAPI *EnumDisplayMonitors_t)(HDC,LPCRECT,MONITORENUMPROC,LPARAM);
+typedef HMONITOR (WINAPI *MonitorFromPoint_t)(POINT,DWORD);
+typedef HMONITOR (WINAPI *MonitorFromWindow_t)(HWND,DWORD);
+typedef BOOL (WINAPI *GetMonitorInfo_t)(HMONITOR,LPMONITORINFO);
+
+#ifndef __WXWINCE__
+// emulation of ChangeDisplaySettingsEx() for Win95
+LONG WINAPI ChangeDisplaySettingsExForWin95(LPCTSTR WXUNUSED(lpszDeviceName),
+ LPDEVMODE lpDevMode,
+ HWND WXUNUSED(hwnd),
+ DWORD dwFlags,
+ LPVOID WXUNUSED(lParam))
+{
+ return ::ChangeDisplaySettings(lpDevMode, dwFlags);
+}
+#endif // !__WXWINCE__
+
+
// ----------------------------------------------------------------------------
-// private classes
+// wxDisplayMSW declaration
// ----------------------------------------------------------------------------
-class wxDisplayInfo
+class wxDisplayMSW : public wxDisplayImpl
{
public:
- // handle of this monitor used by MonitorXXX() functions, never NULL
- HMONITOR m_hmon;
+ wxDisplayMSW(unsigned n, HMONITOR hmon)
+ : wxDisplayImpl(n),
+ m_hmon(hmon)
+ {
+ }
- // the entire area of this monitor in virtual screen coordinates
- wxRect m_rect;
+ virtual wxRect GetGeometry() const;
+ virtual wxRect GetClientArea() const;
+ virtual wxString GetName() const;
+ virtual bool IsPrimary() const;
- // the display device name for this monitor, empty initially and retrieved
- // on demand by DoGetName()
- wxString m_devName;
+ virtual wxVideoMode GetCurrentMode() const;
+ virtual wxArrayVideoModes GetModes(const wxVideoMode& mode) const;
+ virtual bool ChangeMode(const wxVideoMode& mode);
+
+protected:
+ // convert a DEVMODE to our wxVideoMode
+ static wxVideoMode ConvertToVideoMode(const DEVMODE& dm)
+ {
+ // note that dmDisplayFrequency may be 0 or 1 meaning "standard one"
+ // and although 0 is ok for us we don't want to return modes with 1hz
+ // refresh
+ return wxVideoMode(dm.dmPelsWidth,
+ dm.dmPelsHeight,
+ dm.dmBitsPerPel,
+ dm.dmDisplayFrequency > 1 ? dm.dmDisplayFrequency : 0);
+ }
- wxDisplayInfo() { m_hmon = NULL; }
+ // Call GetMonitorInfo() and fill in the provided struct and return true if
+ // it succeeded, otherwise return false.
+ bool GetMonInfo(MONITORINFOEX& monInfo) const;
+
+ HMONITOR m_hmon;
+
+private:
+ wxDECLARE_NO_COPY_CLASS(wxDisplayMSW);
};
-WX_DECLARE_OBJARRAY(wxDisplayInfo, wxDisplayInfoArray);
-#include "wx/arrimpl.cpp"
-WX_DEFINE_OBJARRAY(wxDisplayInfoArray);
-// this is not really MT-unsafe as wxDisplay is only going to be used from the
-// main thread, i.e. we consider that it's a GUI class and so don't protect it
-static wxDisplayInfoArray *g_displays = NULL;
+// ----------------------------------------------------------------------------
+// wxDisplayFactoryMSW declaration
+// ----------------------------------------------------------------------------
+
+WX_DEFINE_ARRAY(HMONITOR, wxMonitorHandleArray);
+// functions dynamically bound by wxDisplayFactoryMSW ctor.
+static MonitorFromPoint_t gs_MonitorFromPoint = NULL;
+static MonitorFromWindow_t gs_MonitorFromWindow = NULL;
+static GetMonitorInfo_t gs_GetMonitorInfo = NULL;
+static EnumDisplayMonitors_t gs_EnumDisplayMonitors = NULL;
-// this module is used to cleanup g_displays array
-class wxDisplayModule : public wxModule
+class wxDisplayFactoryMSW : public wxDisplayFactory
{
public:
- virtual bool OnInit() { return TRUE; }
- virtual void OnExit();
+ // ctor checks if the current system supports multimon API and dynamically
+ // bind the functions we need if this is the case and fills the
+ // m_displays array if they're available
+ wxDisplayFactoryMSW();
- DECLARE_DYNAMIC_CLASS(wxDisplayModule)
-};
+ // Dtor destroys the hidden window we use for getting WM_SETTINGCHANGE.
+ virtual ~wxDisplayFactoryMSW();
-IMPLEMENT_DYNAMIC_CLASS(wxDisplayModule, wxModule)
+ bool IsOk() const { return !m_displays.empty(); }
-// ===========================================================================
-// implementation
-// ===========================================================================
+ virtual wxDisplayImpl *CreateDisplay(unsigned n);
+ virtual unsigned GetCount() { return unsigned(m_displays.size()); }
+ virtual int GetFromPoint(const wxPoint& pt);
+ virtual int GetFromWindow(const wxWindow *window);
-// ----------------------------------------------------------------------------
-// local functions
-// ----------------------------------------------------------------------------
+ // Called when we receive WM_SETTINGCHANGE to refresh the list of monitor
+ // handles.
+ static void RefreshMonitors() { ms_factory->DoRefreshMonitors(); }
-static BOOL CALLBACK wxmswMonitorEnumProc (
- HMONITOR hMonitor, // handle to display monitor
- HDC hdcMonitor, // handle to monitor-appropriate device context (NULL)
- LPRECT lprcMonitor, // pointer to monitor intersection rectangle
- LPARAM dwData // data passed from EnumDisplayMonitors (unused)
-)
-{
- wxDisplayInfo* info = new wxDisplayInfo();
- // we need hMonitor to be able to map display id to it which is needed for
- // MonitorXXX() functions, in particular MonitorFromPoint()
- info->m_hmon = hMonitor;
+private:
+ // EnumDisplayMonitors() callback
+ static BOOL CALLBACK MultimonEnumProc(HMONITOR hMonitor,
+ HDC hdcMonitor,
+ LPRECT lprcMonitor,
+ LPARAM dwData);
- // we also store the display geometry
- info->m_rect.SetX ( lprcMonitor->left );
- info->m_rect.SetY ( lprcMonitor->top );
- info->m_rect.SetWidth ( lprcMonitor->right - lprcMonitor->left );
- info->m_rect.SetHeight ( lprcMonitor->bottom - lprcMonitor->top );
+ // find the monitor corresponding to the given handle,
+ // return wxNOT_FOUND if not found
+ int FindDisplayFromHMONITOR(HMONITOR hmon) const;
- // now add this monitor to the array
- g_displays->Add(info);
+ // Update m_displays array, used by RefreshMonitors().
+ void DoRefreshMonitors();
- // continue the enumeration
- return TRUE;
-}
-// this function must be called before accessing g_displays array as it
-// creates and initializes it
-static void InitDisplays()
-{
- if ( g_displays )
- return;
+ // The unique factory being used (as we don't have direct access to the
+ // global factory pointer in the common code so we just duplicate this
+ // variable (also making it of correct type for us) here).
+ static wxDisplayFactoryMSW* ms_factory;
- g_displays = new wxDisplayInfoArray();
- // enumerate all displays
- if ( !::EnumDisplayMonitors(NULL, NULL, wxmswMonitorEnumProc, 0) )
- {
- wxLogLastError(wxT("EnumDisplayMonitors"));
+ // the array containing information about all available displays, filled by
+ // MultimonEnumProc()
+ wxMonitorHandleArray m_displays;
- // TODO: still create at least one (valid) entry in g_displays for the
- // primary display!
- }
-}
+ // The hidden window we use for receiving WM_SETTINGCHANGE and its class
+ // name.
+ HWND m_hiddenHwnd;
+ const wxChar* m_hiddenClass;
-// convert a DEVMODE to our wxVideoMode
-wxVideoMode ConvertToVideoMode(const DEVMODE& dm)
-{
- // note that dmDisplayFrequency may be 0 or 1 meaning "standard one" and
- // although 0 is ok for us we don't want to return modes with 1hz refresh
- return wxVideoMode(dm.dmPelsWidth,
- dm.dmPelsHeight,
- dm.dmBitsPerPel,
- dm.dmDisplayFrequency > 1 ? dm.dmDisplayFrequency : 0);
-}
+ wxDECLARE_NO_COPY_CLASS(wxDisplayFactoryMSW);
+};
-// emulation of ChangeDisplaySettingsEx() for Win95
-LONG WINAPI ChangeDisplaySettingsExForWin95(LPCTSTR WXUNUSED(lpszDeviceName),
- LPDEVMODE lpDevMode,
- HWND WXUNUSED(hwnd),
- DWORD dwFlags,
- LPVOID WXUNUSED(lParam))
-{
- return ::ChangeDisplaySettings(lpDevMode, dwFlags);
-}
+wxDisplayFactoryMSW* wxDisplayFactoryMSW::ms_factory = NULL;
// ----------------------------------------------------------------------------
-// wxDisplayModule
+// wxDisplay implementation
// ----------------------------------------------------------------------------
-void wxDisplayModule::OnExit()
+/* static */ wxDisplayFactory *wxDisplay::CreateFactory()
{
- delete g_displays;
+ wxDisplayFactoryMSW *factoryMM = new wxDisplayFactoryMSW;
+
+ if ( factoryMM->IsOk() )
+ return factoryMM;
+
+ delete factoryMM;
+
+ // fall back to a stub implementation if no multimon support (Win95?)
+ return new wxDisplayFactorySingle;
}
-// ---------------------------------------------------------------------------
-// wxDisplay
-// ---------------------------------------------------------------------------
-// helper of GetFromPoint() and GetFromWindow()
-static int DisplayFromHMONITOR(HMONITOR hmon)
+// ----------------------------------------------------------------------------
+// wxDisplayMSW implementation
+// ----------------------------------------------------------------------------
+
+bool wxDisplayMSW::GetMonInfo(MONITORINFOEX& monInfo) const
{
- if ( hmon )
+ if ( !gs_GetMonitorInfo(m_hmon, &monInfo) )
{
- const size_t count = wxDisplay::GetCount();
-
- for ( size_t n = 0; n < count; n++ )
- {
- if ( hmon == (*g_displays)[n].m_hmon )
- return n;
- }
+ wxLogLastError(wxT("GetMonitorInfo"));
+ return false;
}
- return wxNOT_FOUND;
+ return true;
}
-/* static */
-size_t wxDisplayBase::GetCount()
+wxRect wxDisplayMSW::GetGeometry() const
{
- InitDisplays();
+ WinStruct<MONITORINFOEX> monInfo;
- // 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( g_displays->GetCount() == (size_t)::GetSystemMetrics(SM_CMONITORS),
- _T("So how many displays does this system have?") );
+ wxRect rect;
+ if ( GetMonInfo(monInfo) )
+ wxCopyRECTToRect(monInfo.rcMonitor, rect);
- return g_displays->GetCount();
+ return rect;
}
-/* static */
-int wxDisplayBase::GetFromPoint ( const wxPoint& pt )
+wxRect wxDisplayMSW::GetClientArea() const
{
- POINT pt2;
- pt2.x = pt.x;
- pt2.y = pt.y;
+ WinStruct<MONITORINFOEX> monInfo;
- return DisplayFromHMONITOR(::MonitorFromPoint(pt2, MONITOR_DEFAULTTONULL));
-}
+ wxRect rectClient;
+ if ( GetMonInfo(monInfo) )
+ wxCopyRECTToRect(monInfo.rcWork, rectClient);
-/* static */
-int wxDisplayBase::GetFromWindow(wxWindow *window)
-{
- return DisplayFromHMONITOR
- (
- ::MonitorFromWindow(GetHwndOf(window), MONITOR_DEFAULTTONULL)
- );
+ return rectClient;
}
-wxDisplay::wxDisplay ( size_t n )
- : wxDisplayBase ( n )
+wxString wxDisplayMSW::GetName() const
{
- // if we do this in ctor we won't have to call it from all the member
- // functions
- InitDisplays();
-}
+ WinStruct<MONITORINFOEX> monInfo;
-wxRect wxDisplay::GetGeometry() const
-{
- return (*g_displays)[m_index].m_rect;
+ wxString name;
+ if ( GetMonInfo(monInfo) )
+ name = monInfo.szDevice;
+
+ return name;
}
-wxString wxDisplay::GetName() const
+bool wxDisplayMSW::IsPrimary() const
{
- wxDisplayInfo& dpyInfo = (*g_displays)[m_index];
- if ( dpyInfo.m_devName.empty() )
- {
- MONITORINFOEX monInfo;
- wxZeroMemory(monInfo);
- monInfo.cbSize = sizeof(monInfo);
+ WinStruct<MONITORINFOEX> monInfo;
- if ( !::GetMonitorInfo(dpyInfo.m_hmon, &monInfo) )
- {
- wxLogLastError(_T("GetMonitorInfo"));
- }
- else
- {
- dpyInfo.m_devName = monInfo.szDevice;
- }
- }
+ if ( !GetMonInfo(monInfo) )
+ return false;
- return dpyInfo.m_devName;
+ return (monInfo.dwFlags & MONITORINFOF_PRIMARY) != 0;
}
-wxString wxDisplay::GetNameForEnumSettings() const
+wxVideoMode wxDisplayMSW::GetCurrentMode() const
{
- int major, minor;
- const bool isWin95 = wxGetOsVersion(&major, &minor) == wxWIN95 &&
- major == 4 && minor == 0;
+ wxVideoMode mode;
- // the first parameter of EnumDisplaySettings() must be NULL under Win95
- // according to MSDN but GetMonitorInfo() stub in multimon.h still returns
- // something even in this case, so we have to correct this manually
- wxString name;
- if ( !isWin95 )
- name = GetName();
+ // The first parameter of EnumDisplaySettings() must be NULL under Win95
+ // according to MSDN. The version of GetName() we implement for Win95
+ // returns an empty string.
+ const wxString name = GetName();
+ const wxChar * const deviceName = name.empty()
+ ? (const wxChar*)NULL
+ : (const wxChar*)name.c_str();
- return name;
+ DEVMODE dm;
+ dm.dmSize = sizeof(dm);
+ dm.dmDriverExtra = 0;
+
+ if ( !::EnumDisplaySettings(deviceName, ENUM_CURRENT_SETTINGS, &dm) )
+ {
+ wxLogLastError(wxT("EnumDisplaySettings(ENUM_CURRENT_SETTINGS)"));
+ }
+ else
+ {
+ mode = ConvertToVideoMode(dm);
+ }
+
+ return mode;
}
-wxArrayVideoModes wxDisplay::GetModes(const wxVideoMode& modeMatch) const
+wxArrayVideoModes wxDisplayMSW::GetModes(const wxVideoMode& modeMatch) const
{
wxArrayVideoModes modes;
- const wxString name = GetNameForEnumSettings();
-
- const wxChar * const deviceName = name.empty() ? NULL : name.c_str();
+ // The first parameter of EnumDisplaySettings() must be NULL under Win95
+ // according to MSDN. The version of GetName() we implement for Win95
+ // returns an empty string.
+ const wxString name = GetName();
+ const wxChar * const deviceName = name.empty()
+ ? (const wxChar*)NULL
+ : (const wxChar*)name.c_str();
DEVMODE dm;
+ dm.dmSize = sizeof(dm);
+ dm.dmDriverExtra = 0;
+
for ( int iModeNum = 0;
::EnumDisplaySettings(deviceName, iModeNum, &dm);
iModeNum++ )
return modes;
}
-wxVideoMode wxDisplay::GetCurrentMode() const
+bool wxDisplayMSW::ChangeMode(const wxVideoMode& mode)
{
- wxVideoMode mode;
-
- const wxString name = GetNameForEnumSettings();
-
+ // prepare ChangeDisplaySettingsEx() parameters
DEVMODE dm;
- if ( !::EnumDisplaySettings(name.empty() ? NULL : name.c_str(),
- ENUM_CURRENT_SETTINGS,
- &dm) )
- {
- wxLogLastError(_T("EnumDisplaySettings(ENUM_CURRENT_SETTINGS)"));
- }
- else
- {
- mode = ConvertToVideoMode(dm);
- }
-
- return mode;
-}
+ DEVMODE *pDevMode;
-bool wxDisplay::ChangeMode(const wxVideoMode& mode)
-{
- // prepare ChangeDisplaySettingsEx() parameters
- DEVMODE dm,
- *pDevMode;
int flags;
if ( mode == wxDefaultVideoMode )
}
else // change to the given mode
{
- wxCHECK_MSG( mode.w && mode.h, FALSE,
- _T("at least the width and height must be specified") );
+ wxCHECK_MSG( mode.GetWidth() && mode.GetHeight(), false,
+ wxT("at least the width and height must be specified") );
wxZeroMemory(dm);
dm.dmSize = sizeof(dm);
+ dm.dmDriverExtra = 0;
dm.dmFields = DM_PELSWIDTH | DM_PELSHEIGHT;
- dm.dmPelsWidth = mode.w;
- dm.dmPelsHeight = mode.h;
+ dm.dmPelsWidth = mode.GetWidth();
+ dm.dmPelsHeight = mode.GetHeight();
- if ( mode.bpp )
+ if ( mode.GetDepth() )
{
dm.dmFields |= DM_BITSPERPEL;
- dm.dmBitsPerPel = mode.bpp;
+ dm.dmBitsPerPel = mode.GetDepth();
}
- if ( mode.refresh )
+ if ( mode.GetRefresh() )
{
dm.dmFields |= DM_DISPLAYFREQUENCY;
- dm.dmDisplayFrequency = mode.refresh;
+ dm.dmDisplayFrequency = mode.GetRefresh();
}
pDevMode = &dm;
+#ifdef __WXWINCE__
+ flags = 0;
+#else // !__WXWINCE__
flags = CDS_FULLSCREEN;
+#endif // __WXWINCE__/!__WXWINCE__
}
static ChangeDisplaySettingsEx_t pfnChangeDisplaySettingsEx = NULL;
if ( !pfnChangeDisplaySettingsEx )
{
- wxDynamicLibrary dllUser32(_T("user32.dll"));
- if ( dllUser32.IsLoaded() )
+ wxDynamicLibrary dllDisplay(displayDllName, wxDL_VERBATIM | wxDL_QUIET);
+ if ( dllDisplay.IsLoaded() )
{
- pfnChangeDisplaySettingsEx = (ChangeDisplaySettingsEx_t)
- dllUser32.GetSymbol(WINFUNC(ChangeDisplaySettingsEx));
+ wxDL_INIT_FUNC_AW(pfn, ChangeDisplaySettingsEx, dllDisplay);
}
- //else: huh, no user32.dll??
+ //else: huh, no this DLL must always be present, what's going on??
+#ifndef __WXWINCE__
if ( !pfnChangeDisplaySettingsEx )
{
// we must be under Win95 and so there is no multiple monitors
// support anyhow
pfnChangeDisplaySettingsEx = ChangeDisplaySettingsExForWin95;
}
+#endif // !__WXWINCE__
}
// do change the mode
switch ( pfnChangeDisplaySettingsEx
(
- GetName(), // display name
- pDevMode, // dev mode or NULL to reset
- NULL, // reserved
+ GetName().wx_str(), // display name
+ pDevMode, // dev mode or NULL to reset
+ NULL, // reserved
flags,
- NULL // pointer to video parameters (not used)
+ NULL // pointer to video parameters (not used)
) )
{
case DISP_CHANGE_SUCCESSFUL:
// ok
- return TRUE;
+ {
+ // If we have a top-level, full-screen frame, emulate
+ // the DirectX behaviour and resize it. This makes this
+ // API quite a bit easier to use.
+ wxWindow *winTop = wxTheApp->GetTopWindow();
+ wxFrame *frameTop = wxDynamicCast(winTop, wxFrame);
+ if (frameTop && frameTop->IsFullScreen())
+ {
+ wxVideoMode current = GetCurrentMode();
+ frameTop->SetClientSize(current.GetWidth(), current.GetHeight());
+ }
+ }
+ return true;
case DISP_CHANGE_BADMODE:
// don't complain about this, this is the only "expected" error
break;
default:
- wxFAIL_MSG( _T("unexpected ChangeDisplaySettingsEx() return value") );
+ wxFAIL_MSG( wxT("unexpected ChangeDisplaySettingsEx() return value") );
}
- return FALSE;
+ return false;
}
-#endif // wxUSE_DISPLAY
+// ----------------------------------------------------------------------------
+// wxDisplayFactoryMSW implementation
+// ----------------------------------------------------------------------------
+
+LRESULT APIENTRY
+wxDisplayWndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
+{
+ if ( msg == WM_SETTINGCHANGE )
+ {
+ wxDisplayFactoryMSW::RefreshMonitors();
+
+ return 0;
+ }
+
+ return ::DefWindowProc(hwnd, msg, wParam, lParam);
+}
+
+wxDisplayFactoryMSW::wxDisplayFactoryMSW()
+{
+ // This is not supposed to happen with the current code, the factory is
+ // implicitly a singleton.
+ wxASSERT_MSG( !ms_factory, wxS("Using more than one factory?") );
+
+ ms_factory = this;
+
+ m_hiddenHwnd = NULL;
+ m_hiddenClass = NULL;
+
+ if ( gs_MonitorFromPoint==NULL || gs_MonitorFromWindow==NULL
+ || gs_GetMonitorInfo==NULL || gs_EnumDisplayMonitors==NULL )
+ {
+ // First initialization, or last initialization failed.
+ wxDynamicLibrary dllDisplay(displayDllName, wxDL_VERBATIM | wxDL_QUIET);
+
+ wxDL_INIT_FUNC(gs_, MonitorFromPoint, dllDisplay);
+ wxDL_INIT_FUNC(gs_, MonitorFromWindow, dllDisplay);
+ wxDL_INIT_FUNC_AW(gs_, GetMonitorInfo, dllDisplay);
+ wxDL_INIT_FUNC(gs_, EnumDisplayMonitors, dllDisplay);
+
+ // we can safely let dllDisplay go out of scope, the DLL itself will
+ // still remain loaded as all programs link to it statically anyhow
+ }
+
+ if ( gs_MonitorFromPoint==NULL || gs_MonitorFromWindow==NULL
+ || gs_GetMonitorInfo==NULL || gs_EnumDisplayMonitors==NULL )
+ return;
+
+ DoRefreshMonitors();
+
+ // Also create a hidden window to listen for WM_SETTINGCHANGE that we
+ // receive when a monitor is added to or removed from the system as we must
+ // refresh our monitor handles information then.
+ m_hiddenHwnd = wxCreateHiddenWindow
+ (
+ &m_hiddenClass,
+ wxT("wxDisplayHiddenWindow"),
+ wxDisplayWndProc
+ );
+}
+
+wxDisplayFactoryMSW::~wxDisplayFactoryMSW()
+{
+ if ( m_hiddenHwnd )
+ {
+ if ( !::DestroyWindow(m_hiddenHwnd) )
+ {
+ wxLogLastError(wxT("DestroyWindow(wxDisplayHiddenWindow)"));
+ }
+
+ if ( m_hiddenClass )
+ {
+ if ( !::UnregisterClass(m_hiddenClass, wxGetInstance()) )
+ {
+ wxLogLastError(wxT("UnregisterClass(wxDisplayHiddenWindow)"));
+ }
+ }
+ }
+
+ ms_factory = NULL;
+}
+
+void wxDisplayFactoryMSW::DoRefreshMonitors()
+{
+ m_displays.Clear();
+
+ if ( !gs_EnumDisplayMonitors(NULL, NULL, MultimonEnumProc, (LPARAM)this) )
+ {
+ wxLogLastError(wxT("EnumDisplayMonitors"));
+ }
+}
+
+/* static */
+BOOL CALLBACK
+wxDisplayFactoryMSW::MultimonEnumProc(
+ HMONITOR hMonitor, // handle to display monitor
+ HDC WXUNUSED(hdcMonitor), // handle to monitor-appropriate device context
+ LPRECT WXUNUSED(lprcMonitor), // pointer to monitor intersection rectangle
+ LPARAM dwData) // data passed from EnumDisplayMonitors (this)
+{
+ wxDisplayFactoryMSW *const self = (wxDisplayFactoryMSW *)dwData;
+
+ self->m_displays.Add(hMonitor);
+
+ // continue the enumeration
+ return TRUE;
+}
+
+wxDisplayImpl *wxDisplayFactoryMSW::CreateDisplay(unsigned n)
+{
+ wxCHECK_MSG( n < m_displays.size(), NULL, wxT("An invalid index was passed to wxDisplay") );
+
+ return new wxDisplayMSW(n, m_displays[n]);
+}
+
+// helper for GetFromPoint() and GetFromWindow()
+int wxDisplayFactoryMSW::FindDisplayFromHMONITOR(HMONITOR hmon) const
+{
+ if ( hmon )
+ {
+ const size_t count = m_displays.size();
+ for ( size_t n = 0; n < count; n++ )
+ {
+ if ( hmon == m_displays[n] )
+ return n;
+ }
+ }
+
+ return wxNOT_FOUND;
+}
+
+int wxDisplayFactoryMSW::GetFromPoint(const wxPoint& pt)
+{
+ POINT pt2;
+ pt2.x = pt.x;
+ pt2.y = pt.y;
+
+ return FindDisplayFromHMONITOR(gs_MonitorFromPoint(pt2,
+ MONITOR_DEFAULTTONULL));
+}
+
+int wxDisplayFactoryMSW::GetFromWindow(const wxWindow *window)
+{
+ return FindDisplayFromHMONITOR(gs_MonitorFromWindow(GetHwndOf(window),
+ MONITOR_DEFAULTTONULL));
+}
+
+#endif // wxUSE_DISPLAY
projects / wxWidgets.git / blobdiff