added directx and divx checkers and divx auto installer

stepmania/src/RageMovieTexture.cpp

@@ -326,7 +326,47 @@ HRESULT RageMovieTexture::InitDShowTextureRenderer()
 
     // Add the source filter
     if( FAILED( hr = m_pGB->AddSourceFilter( wFileName, L"SOURCE", &pFSrc ) ) )
+	{
+		int iRetVal = MessageBox( NULL, "Could not locate the DivX video codec. \n\
+DivX is required to play the animations in this game and must \n\
+be installed before running the application.\n\n\
+If you'd like, we can install the DivX codec version 3.11 \n\
+automatically for you.  Would you like to do this?", "Error - DivX missing", MB_YESNO|MB_ICONSTOP );
+		if( iRetVal == IDYES )
+		{
+			STARTUPINFO si;
+			ZeroMemory( &si, sizeof(si) );
+			si.cb = sizeof(si);
+			PROCESS_INFORMATION pi;
+
+
+			CreateProcess(
+				NULL,
+				"divx/Register_DivX.exe",  // pointer to command line string
+				NULL,  // process security attributes
+				NULL,   // thread security attributes
+				FALSE,  // handle inheritance flag
+				0, // creation flags
+				NULL,  // pointer to new environment block
+				"divx",   // pointer to current directory name
+				&si,  // pointer to STARTUPINFO
+				&pi  // pointer to PROCESS_INFORMATION
+			);
+
+		}
+		else
+		{
+			int iRetVal = MessageBox( NULL, "We're sorry, but you must install DivX before using this application.\n\
+Would you like to visit www.divx.com for more information on DivX codec?", "Sorry", MB_YESNO|MB_ICONSTOP );
+			if( iRetVal == IDYES )
+			{
+				GotoURL("http://www.divx.com");
+			}
+		}
+		exit(1);
+		// if this fails, it's probably because the user doesn't have DivX installed
         RageErrorHr( "Could not create source filter to graph!", hr );
+	}
     
     // Find the source's output and the renderer's input
     if( FAILED( hr = pFTR->FindPin( L"In", &pFTRPinIn ) ) )

stepmania/src/RageUtil.cpp

@@ -297,3 +297,56 @@ VOID DisplayErrorAndDie( CString sError )
 	);
 	exit(1);
 }
+
+
+LONG GetRegKey(HKEY key, LPCTSTR subkey, LPTSTR retdata)
+{
+	HKEY hkey;
+    LONG retval = RegOpenKeyEx(key, subkey, 0, KEY_QUERY_VALUE, &hkey);
+
+    if (retval == ERROR_SUCCESS) {
+		long datasize = MAX_PATH;
+		TCHAR data[MAX_PATH];
+		RegQueryValue(hkey, NULL, data, &datasize);
+		lstrcpy(retdata,data);
+		RegCloseKey(hkey);
+	}
+
+    return retval;
+}
+
+HINSTANCE GotoURL(LPCTSTR url)
+{
+	TCHAR key[MAX_PATH + MAX_PATH];
+
+	// First try ShellExecute()
+	HINSTANCE result = ShellExecute(NULL, _T("open"), url, NULL,NULL, SW_SHOWDEFAULT);
+
+	// If it failed, get the .htm regkey and lookup the program
+	if ((UINT)result <= HINSTANCE_ERROR) {
+
+		if (GetRegKey(HKEY_CLASSES_ROOT, _T(".htm"), key) == ERROR_SUCCESS) {
+			lstrcat(key, _T("\\shell\\open\\command"));
+
+			if (GetRegKey(HKEY_CLASSES_ROOT,key,key) == ERROR_SUCCESS) {
+				TCHAR *pos;
+				pos = _tcsstr(key, _T("\"%1\""));
+				if (pos == NULL) {                       // No quotes found
+					pos = strstr(key, _T("%1"));       // Check for %1, without quotes 
+					if (pos == NULL)                   // No parameter at all...
+						pos = key+lstrlen(key)-1;
+					else
+						*pos = '\0';                 // Remove the parameter
+				}
+				else
+					*pos = '\0';                       // Remove the parameter
+
+				lstrcat(pos, _T(" "));
+				lstrcat(pos, url);
+				result = (HINSTANCE) WinExec(key,SW_SHOWDEFAULT);
+			}
+		}
+	}
+
+	return result;
+}

stepmania/src/RageUtil.h

@@ -111,6 +111,8 @@ VOID DisplayErrorAndDie( CString sError );
 //#endif
 
 
+LONG GetRegKey(HKEY key, LPCTSTR subkey, LPTSTR retdata);
+HINSTANCE GotoURL(LPCTSTR url);
 
 
 #endif

stepmania/src/StepMania.cpp

@@ -67,7 +67,7 @@ void Update();			// Update the game logic
 void Render();			// Render a frame
 void ShowFrame();		// Display the contents of the back buffer to the screen
 void SetFullscreen( BOOL bFullscreen );	// Switch between fullscreen and windowed modes.
-
+void TestForDirectX();	// check for DirectX 8
 
 // Functions that work with game objects
 HRESULT		CreateObjects( HWND hWnd );	// allocate and initialize game objects
@@ -123,6 +123,9 @@ int WINAPI WinMain( HINSTANCE hInstance, HINSTANCE, LPSTR, int nCmdShow )
  	if( NULL == g_hWndMain )
 		exit(1);
 
+	
+	TestForDirectX();
+
 
 	// Load keyboard accelerators
 	HACCEL hAccel = LoadAccelerators( NULL, MAKEINTRESOURCE(IDR_MAIN_ACCEL) );
@@ -478,3 +481,29 @@ void SetFullscreen( BOOL bFullscreen )
 								   SCREEN_HEIGHT );
 	RestoreObjects();
 }
+
+
+//-----------------------------------------------------------------------------
+// Name: TestForDirectX()
+// Desc:	check for DirectX 8
+//-----------------------------------------------------------------------------
+#include "getdxver.h"
+
+void TestForDirectX()
+{
+	if( GetDXVersion() < 0x0800 )
+	{
+		int iRetVal = MessageBox( NULL, "We're sorry, but you have an old version of the Microsoft DirectX drivers.\n\
+This application requires DirectX version 8.1 or higher.\n\n\
+Would you like to visit the Microsoft DirectX site to download the latest version?", "Sorry", MB_YESNO|MB_ICONSTOP );
+		if( iRetVal == IDYES )
+		{
+			GotoURL("http://www.microsoft.com/directx/homeuser/downloads/default.asp");
+		}
+
+		exit(1);
+	}
+
+}
+
+

stepmania/src/StepMania.dsp

@@ -404,6 +404,14 @@ SOURCE=.\dxutil.cpp
 # End Source File
 # Begin Source File
 
+SOURCE=.\getdxver.cpp
+# End Source File
+# Begin Source File
+
+SOURCE=.\getdxver.h
+# End Source File
+# Begin Source File
+
 SOURCE=.\resource.h
 # End Source File
 # Begin Source File