D:/Programming/GUI Editor (Source)/EventHandler.h

#ifndef EVENTHANDLER_H
#define EVENTHANDLER_H

#include "Common.h"

#define MAX_MESSAGES 64

/*********** Message structure ************/
struct tMessage
{
        UINT    uiMessage;
        DWORD   dwParam[2];             // Various data passed using those
        double  dwCreateTime;           // Time of creation of this message
        UINT    dwTimeout;              // How long this message exists in a queue
        bool    bUsed;

        tMessage()
        {
                uiMessage = dwTimeout = dwCreateTime = dwParam[0] = dwParam[1] = 0;
                bUsed = false;

#ifdef USE_GLOBAL_TIMER
                dwCreateTime = CGlobalTimer::GetSingleton().GetAbsoluteTime();
#endif
        };

        virtual ~tMessage()
        {

        };
};

class CEventHandler
{

public:
        CEventHandler();
        CEventHandler(UINT MaxMessages);
        virtual ~CEventHandler();

        virtual int PostMessage(UINT uiMessageIndex, DWORD Param1 = 0, DWORD Param2 = 0, UINT uiTimeoutMs = 0);
        tMessage* GetMessage(UINT uiMessageIndex);
        UINT GetMessageCount();

        virtual void Destroy();
        virtual void Dispatch(bool bOnce = true) = 0;
        virtual void Flush() = 0;

protected:

        tMessage *m_pMessages;
        UINT m_uiMessageCount;
        UINT m_uiLastUnusedMessage;

        CTimer m_Timer;
};

#endif

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