Don't timeout on a Wait() if a dialog is showing. The movie decode semaphone would timeout on most dialogs.

Increase Win32 semaphone timeout from 15 -> 60 secs.

stepmania/src/arch/Dialog/Dialog.cpp

@@ -19,6 +19,7 @@
 static DialogDriver *g_pImpl = NULL;
 static DialogDriverNull g_pNullDriver;
 static bool g_bWindowed = false;
+static bool g_bIsShowingDialog = false;
 
 void Dialog::Init()
 {
@@ -59,6 +60,11 @@ void Dialog::Shutdown()
 	g_pImpl = NULL;
 }
 
+bool Dialog::IsShowingDialog()
+{
+	return g_bIsShowingDialog;
+}
+
 static bool MessageIsIgnored( CString ID )
 {
 	vector<CString> list;
@@ -100,7 +106,11 @@ void Dialog::Error( CString sMessage, CString ID )
 	if( ID != "" && MessageIsIgnored( ID ) )
 		return;
 
+	g_bIsShowingDialog = true;
+	
 	g_pImpl->Error( sMessage, ID );
+	
+	g_bIsShowingDialog = false;
 }
 
 void Dialog::SetWindowed( bool bWindowed )
@@ -115,11 +125,15 @@ void Dialog::OK( CString sMessage, CString ID )
 	if( ID != "" && MessageIsIgnored( ID ) )
 		return;
 
+	g_bIsShowingDialog = true;
+	
 	// only show Dialog if windowed
 	if( !g_bWindowed )
 		g_pNullDriver.OK( sMessage, ID );
 	else
 		g_pImpl->OK( sMessage, ID );	// call derived version
+	
+	g_bIsShowingDialog = false;
 }
 
 Dialog::Result Dialog::AbortRetryIgnore( CString sMessage, CString ID )
@@ -129,11 +143,15 @@ Dialog::Result Dialog::AbortRetryIgnore( CString sMessage, CString ID )
 	if( ID != "" && MessageIsIgnored( ID ) )
 		return g_pNullDriver.AbortRetryIgnore( sMessage, ID );
 
+	g_bIsShowingDialog = true;
+	
 	// only show Dialog if windowed
 	if( !g_bWindowed )
 		return g_pNullDriver.AbortRetryIgnore( sMessage, ID );
 	else
 		return g_pImpl->AbortRetryIgnore( sMessage, ID );	// call derived version
+	
+	g_bIsShowingDialog = false;
 }
 
 Dialog::Result Dialog::RetryCancel( CString sMessage, CString ID )
@@ -143,11 +161,15 @@ Dialog::Result Dialog::RetryCancel( CString sMessage, CString ID )
 	if( ID != "" && MessageIsIgnored( ID ) )
 		return g_pNullDriver.RetryCancel( sMessage, ID );
 
+	g_bIsShowingDialog = true;
+
 	// only show Dialog if windowed
 	if( !g_bWindowed )
 		return g_pNullDriver.RetryCancel( sMessage, ID );
 	else
 		return g_pImpl->RetryCancel( sMessage, ID );	// call derived version
+	
+	g_bIsShowingDialog = false;
 }
 
 /*

stepmania/src/arch/Dialog/Dialog.h

@@ -9,6 +9,7 @@ namespace Dialog
 	void Shutdown();
 
 	void SetWindowed( bool bWindowed );
+	bool IsShowingDialog();
 
 	enum Result { abort, retry, ignore, cancel };
 	void Error( CString error, CString ID = "" );

stepmania/src/arch/Threads/Threads_Win32.cpp

@@ -188,12 +188,14 @@ void SemaImpl_Win32::Post()
 
 bool SemaImpl_Win32::Wait()
 {
-	int len = 15000;
+	int len = 60000;
 	int tries = 2;
 
 	while( tries-- )
 	{
-		/* Wait for fifteen seconds.  If it takes longer than that, we're probably deadlocked. */
+		/* Wait for 60 seconds.  In debug builds, some screens may take longer 
+		 * than 15 seconds to load.  If it takes longer than that, we're 
+		 * probably deadlocked. */
 		if( SimpleWaitForSingleObject( sem, len ) )
 		{
 			--m_iCounter;