Merge pull request #5 from WinampDesktop/community

Merge to main

1 files changed, 66 insertions, 0 deletions

diff --git a/Src/Winamp/VideoOutputChildDDraw.cpp b/Src/Winamp/VideoOutputChildDDraw.cpp
new file mode 100644
index 00000000..470a86ce
--- /dev/null
+++ b/Src/Winamp/VideoOutputChildDDraw.cpp
@@ -0,0 +1,66 @@
+#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);
+		}
+	}	
+}