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