winamp/Src/Winamp/VideoOutputChildDDraw.cpp
2024-09-24 14:54:57 +02:00

67 lines
1.7 KiB
C++

#include "main.h"
#include "VideoOutputChildDDraw.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;
HMONITOR hm = MonitorFromWindow(parent, 0);
if (hm)
{
HINSTANCE hdd = LoadLibraryW(TEXT("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 (GetMonitorInfoA(hm, &mi))
{
m_mon_x = mi.rcMonitor.left;
m_mon_y = mi.rcMonitor.top;
}
}
}
FreeLibrary(hdd);
}
}
}