VC++ 2010中实现自定义窗口按钮控件

CString str; GetWindowText(str); dc.DrawText(str,CRect(0,0,rect.Width(),rect.Height()),DT_CENTER|DT_VCENTER|DT_SINGLEL INE); // TODO: 添加您的代码以绘制指定项 }
void CCustomButton::OnLButtonUp(UINT nFlags, CPoint point) { // TODO: 在此添加消息处理程序代码和/或调用默认值 m_IsPressed = FALSE; CButton::OnLButtonUp(nFlags, point); }
VC++ 2010 中实现自定义窗口按钮控件 1. 新建一个 MFC 类使得它继承与 CButton 类；
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2.在生成的类中添加变量
#pragma once
// CCustomButton class CCustomButton : public CButton { DECLARE_DYNAMIC(CCustomButton) public: CCustomButton(); virtual ~CCustomButton(); BOOL m_IsPressed; protected: DECLARE_MESSAGE_MAP() public: virtual void DrawItem(LPDRAWITEMSTRUCT /*lpDrawItemStruct*/); afx_msg void OnLButtonUp(UINT nFlags, CPoint point); afx_msg void OnLButtonDown(UINT nFlags, CPoint point); afx_msg BOOL OnEraseBkgnd(CDC* pDC); };
然后关联控件变量
到此为止，我们已经我们完成了自定义按钮控江
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void CCustomButton::OnLButtonDown(UINT nFlags, CPoint point) { // TODO: 在此添加消息处理程序代码和/或调用默认值 m_IsPressed = TRUE; CButton::OnLButtonDown(nFlags, point); }
3.。重写方法 WM_BUTTONDOWN WM_LBUTTONUP
// CustomButton.cpp : 实现文件 // #include "stdafx.h" #include "just test.h" #include "CustomButton.h"
// CCustomButton IMPLEMENT_DYNAMIC(CCustomButton, CButton) CCustomButton::CCustomButton() { } CCustomButton::~CCustomButton() {
BOOL CCustomButton::OnEraseBkgnd(CDC* pDC) { // TODO: 在此添加消息处理程序代码和/或调用默认值 return TRUE; //return CButton::OnEraseBkgnd(pDC); } 4、最后改写 WM_ERASEBKGND 禁止窗口重画
}
BEGIN_MESSAGE_MAP(CCustomButton, CButton) ON_WM_LBUTTONUP() ON_WM_LBUTTONDOWN() ON_WM_ERASEBKGND() END_MESSAGE_MAP()
// CCustomButton 消息处理程序
void CCustomButton::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct) { CRect rect; GetClientRect(rect); CDC dc; dc.Attach(lpDrawItemStruct->hDC); dc.SetBkMode(TRANSPARENT); CBrush m_Brush; m_Brush.CreateStockObject(NULL_BRUSH); dc.SelectObject(&m_Brush); if(m_IsPressed) { CPen pen(PS_SOLID,2,RGB(255,2,0)); dc.SelectObject(&pen); HRGN rgn = CreateEllipticRgn(0,0,rect.Width(),rect.Height()); SetWindowRgn(rgn,TRUE); dc.Ellipse(0,0,rect.Width(),rect.Height()); dc.SetTextColor(RGB(0,0,255)); } else { CPen pen(PS_SOLID,2,RGB(5,255,0)); dc.SelectObject(&pen); HRGN rgn = CreateEllipticRgn(0,0,rect.Width(),rect.Height()); SetWindowRgn(rgn,TRUE); dc.Ellipse(0,0,rect.Width(),rect.Height()); dc.SetTextColor(RGB(120,0,190)); }