mybutton.cpp

来自「用c++ 开发的中国象棋」· C++ 代码 · 共 157 行

// MyButton.cpp : implementation file
//

#include "stdafx.h"
#include "chinesechess.h"
#include "MyButton.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CMyButton

CMyButton::CMyButton()
{
	m_MouseFlag = FALSE;
	lf = new LOGFONT;

}

CMyButton::~CMyButton()
{
	delete lf;
	m_Font->DeleteObject();

}


BEGIN_MESSAGE_MAP(CMyButton, CButton)
	//{{AFX_MSG_MAP(CMyButton)
	ON_WM_MOUSEMOVE()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMyButton message handlers

void CMyButton::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct) 
{
	// TODO: Add your code to draw the specified item
	CString m_Caption;
	GetWindowText(m_Caption);
	//重新设置按钮的字体
    m_Font = GetFont();             
	m_Font->GetLogFont(lf);
	lf->lfWeight = 540;              //改边字体的粗细
    CFont * NewFont = new CFont;
	NewFont->CreateFontIndirect(lf);

	CDC * hdc = CDC::FromHandle(lpDrawItemStruct->hDC);
    CBrush * m_brush, * m_Oldbrush, * Broderline;
	CPen * m_Pen, * m_OldPen;
	COLORREF m_PenColor, m_BrushColor;                   //按钮的钢笔、笔刷的颜色
    CRect m_ButtonRect(lpDrawItemStruct->rcItem);        //取得按钮的大小
	CRect m_Borderline(m_ButtonRect);              
	CFont * m_OldFont = (CFont * ) hdc->SelectObject(NewFont);
    //绘制各种状态下的按钮
    if ( (lpDrawItemStruct->itemState & ODS_FOCUS) )
	{
		m_ButtonRect.DeflateRect(1, 1);            
	}

	if ((lpDrawItemStruct->itemState & ODS_DISABLED) || 
		(!m_MouseFlag && !(lpDrawItemStruct->itemState & ODS_SELECTED))) 
	{
        m_PenColor = ::GetSysColor(COLOR_3DSHADOW);
		m_BrushColor = ::GetSysColor(COLOR_3DFACE);
		
	}
	else
	{ 
		COLORREF BorderColor = ::GetSysColor(COLOR_HIGHLIGHT);
		m_PenColor = BorderColor;
        if ((lpDrawItemStruct->itemState & ODS_SELECTED))
		{ 
			m_BrushColor = RGB(100, 100, 205);
			hdc->SetTextColor(RGB(250, 0, 100));
		}
		else
		{
			m_BrushColor = RGB(170, 213, 255);
			hdc->SetTextColor(::GetSysColor(COLOR_BTNTEXT));
		}
        
    }

	if (lpDrawItemStruct->itemState & ODS_DISABLED)
	{
		hdc->SetTextColor(::GetSysColor(COLOR_BTNTEXT));
	}
	
	m_Pen = new CPen;
	m_brush = new CBrush;
	m_Pen->CreatePen(PS_SOLID, 1, m_PenColor);
	m_brush->CreateSolidBrush(m_BrushColor);
	m_OldPen = (CPen * )hdc->SelectObject(m_Pen);
	m_Oldbrush = (CBrush *)hdc->SelectObject(m_brush);
	hdc->Rectangle(m_ButtonRect);
	hdc->SetBkMode(TRANSPARENT);
	hdc->DrawText(m_Caption, m_ButtonRect,DT_SINGLELINE|DT_CENTER|DT_VCENTER);

	if ((lpDrawItemStruct->itemState & ODS_FOCUS))
	{
         m_ButtonRect.DeflateRect(3, 3);
		 hdc->DrawFocusRect(m_ButtonRect);  
		 Broderline = new CBrush;
		 Broderline->CreateSolidBrush(RGB(0, 0, 0));
		 hdc->FrameRect(m_Borderline, Broderline);      //绘制按钮的黑边框
		 delete Broderline;
	}
	delete NewFont;
    delete m_Pen;
	delete m_brush;
	hdc->SelectObject(m_OldFont);
	hdc->SelectObject(m_OldPen);
	hdc->SelectObject(m_Oldbrush);
}

void CMyButton::OnMouseMove(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	CWnd* pCaptureWnd=GetCapture();
	if (pCaptureWnd != this)
	{
		m_MouseFlag = TRUE;
		SetCapture();  //加上该句可以防止当鼠标指向时发生闪烁
		
//		Invalidate();
	}
	else
	{
		POINT p2 = point;
		ClientToScreen(&p2);
		 //返回当前鼠标下的窗口句柄，判断该句柄是否为按钮的句柄
		CWnd* wndUnderMouse = WindowFromPoint(p2);    
		if (wndUnderMouse && wndUnderMouse->m_hWnd != this->m_hWnd){
			// Redraw only if mouse goes out
			if (m_MouseFlag == TRUE){
				m_MouseFlag = FALSE;
			//	Invalidate();
			}
			// If user is NOT pressing left button then release capture!
			if (!(nFlags & MK_LBUTTON)) 
		
 				ReleaseCapture();
	 	
		}
	}

	CButton::OnMouseMove(nFlags, point);
}