请教：在OnDrawItem()外如何绘制按钮？

[tangyao13711927]

如题，请教达人指点，如何能够不通过ＯｎＤｒａｗＩｔｅｍ()函数实现按钮绘制？谢谢

[wfx_net]

不通过OnDrawItem那就捕获OnPaint绘制。

[oyljerry]

OnPaint，OnDraw

[tangyao13711927]

知道是在ＯｎＰａｉｎｔ里完成，要具体的方法

[juckxu]

CMyButton::CMyButton()
{
m_Style = 0; //按钮形状风格
b_InRect = false; //鼠标进入标志
m_strText = _T(""); //按钮文字（使用默认文字）
m_ForeColor = RGB(0,0,0); //文字颜色（黑色）
m_BackColor = RGB(243,243,243); //背景色（灰白色）
m_LockForeColor = GetSysColor(COLOR_GRAYTEXT); //锁定按钮的文字颜色
p_Font = NULL; //字体指针
}

CMyButton::~CMyButton()
{
if ( p_Font ) delete p_Font; //删除字体
}


BEGIN_MESSAGE_MAP(CMyButton, CButton)
END_MESSAGE_MAP()



// CMyButton 消息处理程序



void CMyButton::PreSubclassWindow(void)
{
ModifyStyle( 0, BS_OWNERDRAW ); //设置按钮属性为自画式

CButton::PreSubclassWindow();
}

void CMyButton::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct)
{
CDC *pDC = CDC::FromHandle( lpDrawItemStruct->hDC );
m_ButRect = lpDrawItemStruct->rcItem; //获取按钮尺寸

if( m_strText.IsEmpty() )
GetWindowText( m_strText ); //获取按钮文本

int nSavedDC = pDC->SaveDC();
VERIFY( pDC );
DrawButton( pDC ); //绘制按钮
pDC->RestoreDC( nSavedDC );
}
void CMyButton::DrawButton(CDC *pDC)
{
//调整状态
if( m_Style==3 ) m_Style = 0;
if( GetStyle() & WS_DISABLED )
m_Style = 3; //禁止状态
//根据状态调整边框颜色和文字颜色
COLORREF bColor, fColor; //bColor为边框颜色，fColor为文字颜色
switch( m_Style )
{
case 0: bColor = RGB(192,192,192); fColor = m_ForeColor; break; //正常按钮
case 1: bColor = RGB(255,255,255); fColor = m_ForeColor; break; //鼠标进入时按钮
case 2: bColor = RGB(192,192,192); fColor = m_ForeColor; break; //按下的按钮
case 3: bColor = m_BackColor; fColor = m_LockForeColor; break; //锁定的按钮
}
//绘制按钮背景
CBrush Brush;
Brush.CreateSolidBrush( m_BackColor ); //背景刷
pDC->SelectObject( &Brush );
CPen Pen;
Pen.CreatePen(PS_SOLID, 1, bColor );
pDC->SelectObject( &Pen );
pDC->RoundRect(&m_ButRect,CPoint(5,5)); //画圆角矩形
//绘制按钮按下时的边框
if( m_Style!=2 )
{
CRect Rect;
Rect.SetRect( m_ButRect.left+1, m_ButRect.top, m_ButRect.right, m_ButRect.bottom );
pDC->DrawEdge( &Rect, BDR_RAISEDINNER, BF_RECT ); //画边框
}
//绘制按钮文字
pDC->SetTextColor( fColor ); //画文字
pDC->SetBkMode( TRANSPARENT );
pDC->DrawText( m_strText, &m_ButRect, DT_SINGLELINE | DT_CENTER
| DT_VCENTER | DT_END_ELLIPSIS);
//绘制拥有焦点按钮的虚线框
if( GetFocus()==this )
{
CRect Rect;
Rect.SetRect( m_ButRect.left+3, m_ButRect.top+2, m_ButRect.right-3, m_ButRect.bottom-2 );
pDC->DrawFocusRect( &Rect ); //画拥有焦点的虚线框


}
}


void CMyButton::OnMouseMove(UINT nFlags, CPoint point)
{
if( !b_InRect || GetCapture()!=this ) //鼠标进入按钮
{
b_InRect = true; //设置进入标志
SetCapture(); //捕获鼠标
m_Style = 1; //设置按钮状态
Invalidate(); //重绘按钮

}
else
{
if ( !m_ButRect.PtInRect(point) ) //鼠标离开按钮
{
b_InRect = false; //清除进入标志
ReleaseCapture(); //释放捕获的鼠标
m_Style = 0; //设置按钮状态
Invalidate(); //重绘按钮
}
}

CButton::OnMouseMove(nFlags, point);

}

void CMyButton::OnLButtonDown(UINT nFlags, CPoint point)
{
m_Style = 2;
Invalidate(); //重绘按钮

CButton::OnLButtonDown(nFlags, point);

}

void CMyButton::OnLButtonUp(UINT nFlags, CPoint point)
{
m_Style = 1;
Invalidate(); //重绘按钮

CButton::OnLButtonUp(nFlags, point);
}
void CMyButton::SetText(CString str)
{
m_strText = _T("");
SetWindowText(str);
}
void CMyButton::SetForeColor(COLORREF color)
{
m_ForeColor = color;
Invalidate();
}
void CMyButton::SetBkColor(COLORREF color)
{
m_BackColor = color;
Invalidate();
}
void CMyButton::SetTextFont(int FontHight,LPCTSTR FontName)
{
if ( p_Font ) delete p_Font; //删除旧字体
p_Font = new CFont;
p_Font->CreatePointFont( FontHight, FontName ); //创建新字体
SetFont( p_Font ); //设置字体
}