cscrollcontroller.h

简单的COM 实际例子 用法1

//
// CScrollController.h
//

#ifndef __H_CScrollController__
#define __H_CScrollController__

/*
Scrolling always from the right to the left.
There are two scrolling type, bottom-scrolling and up-scrolling.
*/

class COverlayController;
class CScrollController : public COverlayController
{
private:
	const double  cDefaultStride;

	BOOL          mIsBottomScrolling;
	RECT          mValidTitleRect;
	double        mScrollStride;

public:
	CScrollController();
	~CScrollController();

public:
	virtual BOOL StartTitleOverlay(void);
	void SetScrollBottomOrTop(BOOL inIsBottom);

protected:
	void CalculateScrollStride(void);

	virtual void SideEffectProgressChanged(void);
	virtual BOOL BeforeActualOverlay(void);
	virtual BOOL ActualOverlay(PBYTE inImage);
};

#endif // __H_CScrollController__