81 lines
2.3 KiB
C++
81 lines
2.3 KiB
C++
#include "main.h"
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#include "VideoOutputChildDDraw.h"
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#include <multimon.h>
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#include <ddraw.h>
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class MonitorFinder
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{
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public:
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MonitorFinder(HMONITOR hm) : m_monitor_to_find(hm), m_found_devguid(0)
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{}
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HMONITOR m_monitor_to_find;
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int m_found_devguid;
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GUID m_devguid;
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};
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static BOOL WINAPI DDEnumCallbackEx(GUID FAR *lpGUID, LPSTR lpDriverDescription, LPSTR lpDriverName, LPVOID lpContext, HMONITOR hm)
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{
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MonitorFinder *ovo = (MonitorFinder *)lpContext;
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if (ovo->m_found_devguid) return 1;
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if (hm == ovo->m_monitor_to_find)
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{
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ovo->m_devguid = *lpGUID;
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ovo->m_found_devguid = 1;
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}
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return 1;
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}
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void VideoOutputChildDDraw::update_monitor_coords()
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{
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//find the correct monitor if multiple monitor support is present
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m_mon_x = 0;
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m_mon_y = 0;
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HINSTANCE h = LoadLibrary(L"user32.dll");
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if (h)
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{
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HMONITOR (WINAPI *Mfp)(POINT pt, DWORD dwFlags) = (HMONITOR (WINAPI *)(POINT, DWORD)) GetProcAddress(h, "MonitorFromPoint");
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HMONITOR (WINAPI *Mfr)(LPCRECT lpcr, DWORD dwFlags) = (HMONITOR (WINAPI *)(LPCRECT, DWORD)) GetProcAddress(h, "MonitorFromRect");
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HMONITOR (WINAPI *Mfw)(HWND wnd, DWORD dwFlags) = (HMONITOR (WINAPI *)(HWND, DWORD)) GetProcAddress(h, "MonitorFromWindow");
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BOOL (WINAPI *Gmi)(HMONITOR mon, LPMONITORINFO lpmi) = (BOOL (WINAPI *)(HMONITOR, LPMONITORINFO)) GetProcAddress(h, "GetMonitorInfoA");
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if (Mfp && Mfr && Mfw && Gmi)
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{
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HMONITOR hm = Mfw(parent, 0);
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if (hm)
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{
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HINSTANCE hdd = LoadLibrary(L"ddraw.dll");
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if (hdd)
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{
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typedef BOOL (FAR PASCAL * LPDDENUMCALLBACKEXA)(GUID FAR *, LPSTR, LPSTR, LPVOID, HMONITOR);
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typedef HRESULT (WINAPI * LPDIRECTDRAWENUMERATEEX)( LPDDENUMCALLBACKEXA lpCallback, LPVOID lpContext, DWORD dwFlags);
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LPDIRECTDRAWENUMERATEEX lpDDEnumEx;
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lpDDEnumEx = (LPDIRECTDRAWENUMERATEEX) GetProcAddress(hdd, "DirectDrawEnumerateExW");
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if (lpDDEnumEx)
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{
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MonitorFinder finder(hm);
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lpDDEnumEx(&DDEnumCallbackEx, &finder, DDENUM_ATTACHEDSECONDARYDEVICES | DDENUM_NONDISPLAYDEVICES);
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foundGUID=!!finder.m_found_devguid;
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if (foundGUID)
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{
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m_devguid=finder.m_devguid;
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MONITORINFOEXW mi;
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memset(&mi, 0, sizeof(mi));
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mi.cbSize = sizeof(mi);
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if (Gmi(hm, &mi))
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{
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m_mon_x = mi.rcMonitor.left;
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m_mon_y = mi.rcMonitor.top;
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}
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}
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}
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FreeLibrary(hdd);
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}
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}
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}
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FreeLibrary(h);
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}
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}
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