MFC自定义按钮实现CRgnButton

最新推荐文章于 2024-10-07 11:59:45 发布

ranjio_z

最新推荐文章于 2024-10-07 11:59:45 发布

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本文链接：https://blog.youkuaiyun.com/ranjio_z/article/details/50410299

本文档详细介绍了如何在MFC应用程序中实现一个自定义的CRgnButton类，通过RgnButton.h和RgnButton.cpp两个源文件，展示了自定义按钮的图形区域和交互功能。

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RgnButton.h

#pragma once
#include "afxwin.h"
class CRgnButton :
	public CButton
{
	DECLARE_DYNAMIC(CRgnButton)
public:
	CRgnButton();
	~CRgnButton();
	virtual void SetImage(Image* img);
	virtual void SetImageHover(Image* img);
	virtual void Create(CWnd* pParentWnd, UINT nID);
private:
	// 设置窗体区域
	void SetRgn(CRgn *region);
	// 读取图片的非透明区生成区域
	Region* CreateRegion(Image* img);
	Image* m_image;
	Point m_imgOffset;
	HRGN rgn, trgn;
	Image* m_imageHover;
	bool m_isHover;
	bool m_isHoverShowing;
protected:
	DECLARE_MESSAGE_MAP()
	virtual void PreSubclassWindow();
public:
	virtual void DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct);
	afx_msg void OnLButtonDown(UINT nFlags, CPoint point);
	afx_msg void OnLButtonUp(UINT nFlags, CPoint point);

	afx_msg void OnMouseLeave();
	afx_msg void OnMouseMove(UINT nFlags, CPoint point);
	afx_msg void OnMouseHover(UINT nFlags, CPoint point);
};

RgnButton.cpp