From 20d28e80a5c861a9d5f449ea911ab75b4f37ad0d Mon Sep 17 00:00:00 2001
From: Jef <jef@targetspot.com>
Date: Tue, 24 Sep 2024 14:54:57 +0200
Subject: Initial community commit

---
 .../Input/in_wmvdrm/VideoOutputChildDDraw.cpp      | 80 ++++++++++++++++++++++
 1 file changed, 80 insertions(+)
 create mode 100644 Src/Plugins/Input/in_wmvdrm/VideoOutputChildDDraw.cpp

(limited to 'Src/Plugins/Input/in_wmvdrm/VideoOutputChildDDraw.cpp')

diff --git a/Src/Plugins/Input/in_wmvdrm/VideoOutputChildDDraw.cpp b/Src/Plugins/Input/in_wmvdrm/VideoOutputChildDDraw.cpp
new file mode 100644
index 00000000..511fb80a
--- /dev/null
+++ b/Src/Plugins/Input/in_wmvdrm/VideoOutputChildDDraw.cpp
@@ -0,0 +1,80 @@
+#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);
+	}
+}
+
-- 
cgit