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utils/voice_tweak/win_idle.h

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//
+//=============================================================================//
+// WinIdle.h - Defines a class for sending idle messages to a window from a secondary thread
+
+#ifndef __WINIDLE_H__
+#define __WINIDLE_H__
+
+
+class CWinIdle
+{
+protected:
+	HANDLE m_hIdleEvent, m_hStopEvent;
+
+	HWND m_hWnd;
+	UINT m_uMsg;
+	WPARAM m_wParam;
+	LPARAM m_lParam;
+
+	DWORD m_dwDelay;
+
+	HANDLE m_hIdleThread;
+
+	// The thread calling stub
+	static DWORD WINAPI ThreadStub(LPVOID pIdle);
+	// The actual idle loop
+	virtual DWORD RunIdle();
+	
+public:
+	CWinIdle();
+	virtual ~CWinIdle();
+
+	inline DWORD	GetDelay()				{return m_dwDelay;}
+	inline void		SetDelay(DWORD delay)	{m_dwDelay = delay;}
+
+	// Member access
+	virtual HANDLE GetThreadHandle() const { return m_hIdleThread; };
+
+	// Start idling, and define the message and window to use
+	//	Returns TRUE on success
+	virtual BOOL StartIdle(HWND hWnd, UINT uMessage, WPARAM wParam = 0, LPARAM lParam = 0, DWORD dwDelay = 0);
+	// Stop idling
+	//	Returns TRUE on success
+	virtual BOOL EndIdle();
+	// Notify the idle process that the message was received.
+	//	Note : If this function is not called, the idle thread will not send any messages
+	virtual void NextIdle();
+};
+
+
+// Used to slow down the idle thread while dialogs are up.
+class IdleChanger
+{
+public:
+		IdleChanger(CWinIdle *pIdle, DWORD msDelay)
+		{
+			m_pIdle = pIdle;
+			m_OldDelay = pIdle->GetDelay();
+			pIdle->SetDelay(msDelay);
+		}
+
+		~IdleChanger()
+		{
+			m_pIdle->SetDelay(m_OldDelay);
+		}
+
+	CWinIdle		*m_pIdle;
+	DWORD			m_OldDelay;
+};
+
+
+
+#endif //__WINIDLE_H__
+