From 01c54165d1182cc74d8e5d43cdb1985902af0b2f Mon Sep 17 00:00:00 2001 From: Vadim Zeitlin Date: Sun, 12 Mar 2006 13:49:21 +0000 Subject: [PATCH] don't require multimon.h any more now (patch 1446030); enable wxUSE_DISPLAY by default git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@38025 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775 --- configure.in | 9 +- docs/changes.txt | 1 + include/wx/msw/display.h | 3 - include/wx/msw/setup0.h | 2 +- src/msw/display.cpp | 223 ++++++++++++++++++++++++++++----------- 5 files changed, 168 insertions(+), 70 deletions(-) diff --git a/configure.in b/configure.in index 8e51943411..e8d9a90e68 100644 --- a/configure.in +++ b/configure.in @@ -3619,14 +3619,9 @@ dnl --------------------------------------------------------------------------- fi elif test "$wxUSE_MSW" = 1; then dnl --------------------------------------------------------------------------- -dnl DirectDraw / Multimon for MSW +dnl DirectDraw for MSW - optionally used by WxDisplay. dnl --------------------------------------------------------------------------- - AC_CHECK_HEADERS([multimon.h ddraw.h], [], - [ - wxUSE_DISPLAY="no" - AC_MSG_WARN([ddraw.h or multimon.h not found; disabling wxDisplay]) - ], - [#include ]) + AC_CHECK_HEADERS([ddraw.h], [], [], [#include ]) fi fi diff --git a/docs/changes.txt b/docs/changes.txt index 053ee2f8b1..d071bab7c1 100644 --- a/docs/changes.txt +++ b/docs/changes.txt @@ -138,6 +138,7 @@ wxMSW: - Fall back to unthemed wxNotebook if specified orientation not available. - wxListCtrl and wxTreeCtrl now resize their standard font if the user changes the system font. +- wxDisplay doesn't require multimon.h now and is enabled by default (Olly Betts) wxGTK: diff --git a/include/wx/msw/display.h b/include/wx/msw/display.h index a001fda4ae..d261e7404c 100644 --- a/include/wx/msw/display.h +++ b/include/wx/msw/display.h @@ -37,9 +37,6 @@ public: virtual bool IsPrimary() const; private: - // get the display name to use with EnumDisplaySettings() - wxString GetNameForEnumSettings() const; - // we have different implementations using DirectDraw and without it wxArrayVideoModes DoGetModesDirectX(const wxVideoMode& modeMatch) const; bool DoChangeModeDirectX(const wxVideoMode& mode); diff --git a/include/wx/msw/setup0.h b/include/wx/msw/setup0.h index d6ffedfb8e..ac2f4af6ef 100644 --- a/include/wx/msw/setup0.h +++ b/include/wx/msw/setup0.h @@ -677,7 +677,7 @@ // Default is 0 because it isn't yet implemented on all platforms // // Recommended setting: 1 if you need it, can be safely set to 0 otherwise -#define wxUSE_DISPLAY 0 +#define wxUSE_DISPLAY 1 // Miscellaneous geometry code: needed for Canvas library #define wxUSE_GEOMETRY 1 diff --git a/src/msw/display.cpp b/src/msw/display.cpp index 59367a8f7e..e284a22039 100644 --- a/src/msw/display.cpp +++ b/src/msw/display.cpp @@ -37,33 +37,16 @@ #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(s), this one doesn't compile without warnings - // with VC++ 6 - #pragma warning(disable:4706) +// Mingw's w32api headers don't include ddraw.h, though the user may have +// installed it. If using configure, we actually probe for ddraw.h there +// and set HAVE_DDRAW_H. Otherwise, assume we don't have it if using +// the w32api headers, and that we do otherwise. +#if !defined HAVE_W32API_H && !defined HAVE_DDRAW_H +#define HAVE_DDRAW_H 1 #endif -// with mingw32, we must include windows.h first and it doesn't hurt with other -// compilers -#include "wx/msw/wrapwin.h" - #ifndef __WXWINCE__ - #include - - // HMONITOR can be declared either in new enough windef.h or in multimon.h - // itself if _WIN32_WINNT < 0x0500, but the trouble is that we set - // _WIN32_WINNT to maximal possible value ourselves in wx/msw/wrapwin.h so - // that multimon.h doesn't define it but with old headers, neither does - // windef.h, in spite of _WIN32_WINNT value. Even more unfortunately, we + // 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 @@ -73,16 +56,14 @@ #endif #endif // !__WXWINCE__ -#ifdef _MSC_VER - #pragma warning(default:4706) -#endif - +#ifdef HAVE_DDRAW_H #include // we don't want to link with ddraw.lib which contains the real // IID_IDirectDraw2 definition const GUID wxIID_IDirectDraw2 = { 0xB3A6F3E0, 0x2B43, 0x11CF, { 0xA2,0xDE,0x00,0xAA,0x00,0xB9,0x33,0x56 } }; +#endif // ---------------------------------------------------------------------------- // macros @@ -104,6 +85,7 @@ typedef LONG (WINAPI *ChangeDisplaySettingsEx_t)(LPCTSTR lpszDeviceName, DWORD dwFlags, LPVOID lParam); +#ifdef HAVE_DDRAW_H typedef BOOL (PASCAL *DDEnumExCallback_t)(GUID *pGuid, LPTSTR driverDescription, LPTSTR driverName, @@ -117,6 +99,17 @@ typedef HRESULT (WINAPI *DirectDrawEnumerateEx_t)(DDEnumExCallback_t lpCallback, typedef HRESULT (WINAPI *DirectDrawCreate_t)(GUID *lpGUID, LPDIRECTDRAW *lplpDD, IUnknown *pUnkOuter); +#endif + +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); + +static EnumDisplayMonitors_t gs_EnumDisplayMonitors = NULL; +static MonitorFromPoint_t gs_MonitorFromPoint = NULL; +static MonitorFromWindow_t gs_MonitorFromWindow = NULL; +static GetMonitorInfo_t gs_GetMonitorInfo = NULL; // ---------------------------------------------------------------------------- // private classes @@ -129,7 +122,11 @@ public: HMONITOR m_hmon; // IDirectDraw object used to control this display, may be NULL +#ifdef HAVE_DDRAW_H IDirectDraw2 *m_pDD2; +#else + void *m_pDD2; +#endif // DirectDraw GUID for this display, only valid when using DirectDraw GUID m_guid; @@ -142,7 +139,11 @@ public: wxString m_devName; wxDisplayInfo() { m_hmon = NULL; m_pDD2 = NULL; } - ~wxDisplayInfo() { if ( m_pDD2 ) m_pDD2->Release(); } + ~wxDisplayInfo() { +#ifdef HAVE_DDRAW_H + if ( m_pDD2 ) m_pDD2->Release(); +#endif + } }; WX_DECLARE_OBJARRAY(wxDisplayInfo, wxDisplayInfoArray); @@ -165,11 +166,52 @@ IMPLEMENT_DYNAMIC_CLASS(wxDisplayModule, wxModule) // globals // ---------------------------------------------------------------------------- +#ifdef HAVE_DDRAW_H // do we use DirectX? static bool gs_useDirectX = false; +#endif +// Try to look up the functions needed for supporting multiple monitors. If +// they aren't available (probably because we're running on Win95 or NT4 which +// predate this API), set a flag which makes wxDisplay return results for a +// single screen. +static bool OsSupportsMultipleMonitors() +{ + static int isNewEnough = -1; + if ( isNewEnough == -1 ) + { + isNewEnough = 0; + wxDynamicLibrary dllUser32(_T("user32.dll")); + // Check for one of the symbols to avoid logging errors just because + // we happen to be running on Win95 or NT4. + if ( dllUser32.IsLoaded() && + dllUser32.HasSymbol(wxT("EnumDisplayMonitors")) ) + { + // GetMonitorInfo has Unicode/ANSI variants, the others don't. + gs_EnumDisplayMonitors = (EnumDisplayMonitors_t) + dllUser32.GetSymbol(wxT("EnumDisplayMonitors")); + gs_MonitorFromPoint = (MonitorFromPoint_t) + dllUser32.GetSymbol(wxT("MonitorFromPoint")); + gs_MonitorFromWindow = (MonitorFromWindow_t) + dllUser32.GetSymbol(wxT("MonitorFromWindow")); + gs_GetMonitorInfo = (GetMonitorInfo_t) + dllUser32.GetSymbol(WINFUNC(GetMonitorInfo)); + if ( gs_EnumDisplayMonitors != NULL && + gs_MonitorFromPoint != NULL && + gs_MonitorFromWindow != NULL && + gs_GetMonitorInfo != NULL ) + { + isNewEnough = 1; + } + } + } + return (isNewEnough != 0); +} + +#ifdef HAVE_DDRAW_H // dynamically resolved DirectDrawCreate() static DirectDrawCreate_t gs_DirectDrawCreate = NULL; +#endif // 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 @@ -209,6 +251,7 @@ static BOOL CALLBACK wxmswMonitorEnumProc ( return true; } +#ifdef HAVE_DDRAW_H BOOL PASCAL wxDDEnumExCallback(GUID *pGuid, LPTSTR WXUNUSED(driverDescription), @@ -250,11 +293,13 @@ HRESULT WINAPI wxDDEnumModesCallback(LPDDSURFACEDESC lpDDSurfaceDesc, // continue the enumeration return DDENUMRET_OK; } +#endif // ---------------------------------------------------------------------------- // local functions // ---------------------------------------------------------------------------- +#ifdef HAVE_DDRAW_H // initialize gs_displays using DirectX functions static bool DoInitDirectX() { @@ -296,12 +341,13 @@ static bool DoInitDirectX() return true; } +#endif // initialize gs_displays using the standard Windows functions static void DoInitStdWindows() { // enumerate all displays - if ( !::EnumDisplayMonitors(NULL, NULL, wxmswMonitorEnumProc, 0) ) + if ( !gs_EnumDisplayMonitors(NULL, NULL, wxmswMonitorEnumProc, 0) ) { wxLogLastError(wxT("EnumDisplayMonitors")); @@ -319,6 +365,7 @@ static void InitDisplays() gs_displays = new wxDisplayInfoArray(); +#ifdef HAVE_DDRAW_H if ( !gs_useDirectX || !DoInitDirectX() ) { // either we were told not to try to use DirectX or fall back to std @@ -327,6 +374,9 @@ static void InitDisplays() DoInitStdWindows(); } +#else + DoInitStdWindows(); +#endif } // convert a DEVMODE to our wxVideoMode @@ -370,10 +420,13 @@ void wxDisplay::UseDirectX(bool useDX) { wxCHECK_RET( !gs_displays, _T("it is too late to call UseDirectX") ); - gs_useDirectX = useDX; +#ifdef HAVE_DDRAW_H + // DirectDrawEnumerateEx requires Win98 or Win2k anyway. + if ( OsSupportsMultipleMonitors() ) gs_useDirectX = useDX; +#endif } -// helper of GetFromPoint() and GetFromWindow() +// helper for GetFromPoint() and GetFromWindow() static int DisplayFromHMONITOR(HMONITOR hmon) { if ( hmon ) @@ -393,6 +446,8 @@ static int DisplayFromHMONITOR(HMONITOR hmon) /* static */ size_t wxDisplayBase::GetCount() { + if ( !OsSupportsMultipleMonitors() ) return 1; + InitDisplays(); //RN: FIXME: This is wrong - the display info array should reload after every call @@ -408,19 +463,42 @@ size_t wxDisplayBase::GetCount() /* static */ int wxDisplayBase::GetFromPoint ( const wxPoint& pt ) { + if ( !OsSupportsMultipleMonitors() ) + { + const wxSize size = wxGetDisplaySize(); + if (pt.x >= 0 && pt.x < size.GetWidth() && + pt.y >= 0 && pt.y < size.GetHeight()) + { + return 0; + } + return wxNOT_FOUND; + } + POINT pt2; pt2.x = pt.x; pt2.y = pt.y; - return DisplayFromHMONITOR(::MonitorFromPoint(pt2, MONITOR_DEFAULTTONULL)); + return DisplayFromHMONITOR(gs_MonitorFromPoint(pt2, MONITOR_DEFAULTTONULL)); } /* static */ int wxDisplayBase::GetFromWindow(wxWindow *window) { + if ( !OsSupportsMultipleMonitors() ) + { + const wxRect r(window->GetRect()); + const wxSize size = wxGetDisplaySize(); + if (r.x < size.GetWidth() && r.x + r.width >= 0 && + r.y < size.GetHeight() && r.y + r.height >= 0) + { + return 0; + } + return wxNOT_FOUND; + } + return DisplayFromHMONITOR ( - ::MonitorFromWindow(GetHwndOf(window), MONITOR_DEFAULTTONULL) + gs_MonitorFromWindow(GetHwndOf(window), MONITOR_DEFAULTTONULL) ); } @@ -431,10 +509,13 @@ int wxDisplayBase::GetFromWindow(wxWindow *window) wxDisplay::wxDisplay ( size_t n ) : wxDisplayBase ( n ) { + if ( !OsSupportsMultipleMonitors() ) return; + // if we do this in ctor we won't have to call it from all the member // functions InitDisplays(); +#ifdef HAVE_DDRAW_H if ( gs_useDirectX ) { wxDisplayInfo& dpyInfo = (*gs_displays)[n]; @@ -476,10 +557,14 @@ wxDisplay::wxDisplay ( size_t n ) // all the time pDD2->AddRef(); } +#endif } wxDisplay::~wxDisplay() { +#ifdef HAVE_DDRAW_H + if ( !OsSupportsMultipleMonitors() ) return; + wxDisplayInfo& dpyInfo = (*gs_displays)[m_index]; LPDIRECTDRAW2& pDD2 = dpyInfo.m_pDD2; @@ -487,6 +572,7 @@ wxDisplay::~wxDisplay() { pDD2->Release(); } +#endif } // ---------------------------------------------------------------------------- @@ -495,12 +581,22 @@ wxDisplay::~wxDisplay() bool wxDisplay::IsOk() const { +#ifdef HAVE_DDRAW_H return m_index < GetCount() && (!gs_useDirectX || (*gs_displays)[m_index].m_pDD2); +#else + return m_index < GetCount(); +#endif } wxRect wxDisplay::GetGeometry() const { + if ( !OsSupportsMultipleMonitors() ) + { + wxSize size = wxGetDisplaySize(); + return wxRect(0, 0, size.GetWidth(), size.GetHeight()); + } + wxDisplayInfo& dpyInfo = (*gs_displays)[m_index]; wxRect& rect = dpyInfo.m_rect; if ( !rect.width ) @@ -509,7 +605,7 @@ wxRect wxDisplay::GetGeometry() const wxZeroMemory(monInfo); monInfo.cbSize = sizeof(monInfo); - if ( !::GetMonitorInfo(dpyInfo.m_hmon, &monInfo) ) + if ( !gs_GetMonitorInfo(dpyInfo.m_hmon, &monInfo) ) { wxLogLastError(_T("GetMonitorInfo")); } @@ -524,6 +620,8 @@ wxRect wxDisplay::GetGeometry() const wxString wxDisplay::GetName() const { + if ( !OsSupportsMultipleMonitors() ) return wxT(""); + wxDisplayInfo& dpyInfo = (*gs_displays)[m_index]; if ( dpyInfo.m_devName.empty() ) { @@ -535,7 +633,7 @@ wxString wxDisplay::GetName() const // 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) ) + if ( !gs_GetMonitorInfo(dpyInfo.m_hmon, (LPMONITORINFO)&monInfo) ) { wxLogLastError(_T("GetMonitorInfo")); } @@ -548,28 +646,14 @@ wxString wxDisplay::GetName() const return dpyInfo.m_devName; } -wxString wxDisplay::GetNameForEnumSettings() const -{ - int major, minor; - const bool isWin95 = wxGetOsVersion(&major, &minor) == wxWIN95 && - major == 4 && minor == 0; - - // 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(); - - return name; -} - // ---------------------------------------------------------------------------- // determine if this is the primary display // ---------------------------------------------------------------------------- bool wxDisplay::IsPrimary() const { + if ( !OsSupportsMultipleMonitors() ) return true; + wxDisplayInfo& dpyInfo = (*gs_displays)[m_index]; MONITORINFOEX monInfo; @@ -580,7 +664,7 @@ bool wxDisplay::IsPrimary() const // 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) ) + if ( !gs_GetMonitorInfo(dpyInfo.m_hmon, (LPMONITORINFO)&monInfo) ) { wxLogLastError(_T("GetMonitorInfo")); } @@ -592,6 +676,7 @@ bool wxDisplay::IsPrimary() const // video modes enumeration // ---------------------------------------------------------------------------- +#ifdef HAVE_DDRAW_H wxArrayVideoModes wxDisplay::DoGetModesDirectX(const wxVideoMode& WXUNUSED(modeMatch)) const { @@ -617,17 +702,22 @@ wxDisplay::DoGetModesDirectX(const wxVideoMode& WXUNUSED(modeMatch)) const return modes; } +#endif wxArrayVideoModes wxDisplay::DoGetModesWindows(const wxVideoMode& modeMatch) const { wxArrayVideoModes modes; - const wxString name = GetNameForEnumSettings(); - + // 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() ? NULL : name.c_str(); DEVMODE dm; + dm.dmSize = sizeof(dm); + dm.dmDriverExtra = 0; for ( int iModeNum = 0; ::EnumDisplaySettings(deviceName, iModeNum, &dm); iModeNum++ ) @@ -644,20 +734,28 @@ wxDisplay::DoGetModesWindows(const wxVideoMode& modeMatch) const wxArrayVideoModes wxDisplay::GetModes(const wxVideoMode& modeMatch) const { +#ifdef HAVE_DDRAW_H return gs_useDirectX ? DoGetModesDirectX(modeMatch) : DoGetModesWindows(modeMatch); +#else + return DoGetModesWindows(modeMatch); +#endif } wxVideoMode wxDisplay::GetCurrentMode() const { wxVideoMode mode; - const wxString name = GetNameForEnumSettings(); + // 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() ? NULL : name.c_str(); DEVMODE dm; - if ( !::EnumDisplaySettings(name.empty() ? NULL : name.c_str(), - ENUM_CURRENT_SETTINGS, - &dm) ) + dm.dmSize = sizeof(dm); + dm.dmDriverExtra = 0; + if ( !::EnumDisplaySettings(deviceName, ENUM_CURRENT_SETTINGS, &dm) ) { wxLogLastError(_T("EnumDisplaySettings(ENUM_CURRENT_SETTINGS)")); } @@ -673,6 +771,7 @@ wxVideoMode wxDisplay::GetCurrentMode() const // video mode switching // ---------------------------------------------------------------------------- +#ifdef HAVE_DDRAW_H bool wxDisplay::DoChangeModeDirectX(const wxVideoMode& mode) { IDirectDraw2 *pDD = (*gs_displays)[m_index].m_pDD2; @@ -705,6 +804,7 @@ bool wxDisplay::DoChangeModeDirectX(const wxVideoMode& mode) return true; } +#endif bool wxDisplay::DoChangeModeWindows(const wxVideoMode& mode) { @@ -726,6 +826,7 @@ bool wxDisplay::DoChangeModeWindows(const wxVideoMode& mode) wxZeroMemory(dm); dm.dmSize = sizeof(dm); + dm.dmDriverExtra = 0; dm.dmFields = DM_PELSWIDTH | DM_PELSHEIGHT; dm.dmPelsWidth = mode.w; dm.dmPelsHeight = mode.h; @@ -816,8 +917,12 @@ bool wxDisplay::DoChangeModeWindows(const wxVideoMode& mode) bool wxDisplay::ChangeMode(const wxVideoMode& mode) { +#ifdef HAVE_DDRAW_H return gs_useDirectX ? DoChangeModeDirectX(mode) : DoChangeModeWindows(mode); +#else + return DoChangeModeWindows(mode); +#endif } #endif // wxUSE_DISPLAY -- 2.45.2