First take at real windowed mode, includes a hack for CnC and RA mouse

mouse.c

@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2010 Toni Spets <toni.spets@iki.fi>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* This is a special mouse coordinate fix for games that use GetCursorPos and expect to be in fullscreen */
+
+#include <windows.h>
+#include <stdio.h>
+#include "main.h"
+#include "surface.h"
+
+BOOL WINAPI fake_GetCursorPos(LPPOINT lpPoint)
+{
+    lpPoint->x = ddraw->cursor.x;
+    lpPoint->y = ddraw->cursor.y;
+    return TRUE;
+}
+
+void mouse_lock()
+{
+    if(!ddraw->locked)
+    {
+        ddraw->locked = TRUE;
+        ClipCursor(&ddraw->cursorclip);
+        while(ShowCursor(FALSE) > 0);
+        SetEvent(ddraw_primary->flipEvent);
+    }
+}
+
+void mouse_unlock()
+{
+    if(ddraw->locked)
+    {
+        ShowCursor(TRUE);
+    }
+
+    ddraw->locked = FALSE;
+    ClipCursor(NULL);
+    ddraw->cursor.x = ddraw->width / 2;
+    ddraw->cursor.y = ddraw->height / 2;
+
+    if(ddraw_primary)
+    {
+        SetEvent(ddraw_primary->flipEvent);
+    }
+}
+
+void mouse_init(HWND hWnd)
+{
+    DWORD tmp;
+    HANDLE hProcess;
+    DWORD dwWritten;
+
+    GetWindowThreadProcessId(hWnd, &tmp);
+    hProcess = OpenProcess(PROCESS_ALL_ACCESS, FALSE, tmp);
+
+    tmp = (DWORD)fake_GetCursorPos;
+
+    // Command & Conquer
+    //WriteProcessMemory(hProcess, (void *)0x005B0184, &tmp, 4, &dwWritten);
+
+    // Red Alert
+    //WriteProcessMemory(hProcess, (void *)0x005E6848, &tmp, 4, &dwWritten);
+}