OwnerDraw CButton mfc焦点 [英] OwnerDraw CButton mfc focus

问题描述

使用标准按钮，如果我有确定和取消，默认为OK，然后按右箭头键取消取消，按下键盘上的回车按钮取消按钮功能。

这与ownerdraw按钮不会发生。如果我按右箭头取消按钮被关注，但按下键盘上的确定按钮功能被称为。

我如何拥有一个标准行为的所有者按钮？

这是我的课。

  BEGIN_MESSAGE_MAP（CFlatButton，CButton） 
 // {{{AFX_MSG_MAP（CMyClass）
 //注意 -  ClassWizard将在这里添加和删除映射宏。 
 //}} AFX_MSG_MAP 
 END_MESSAGE_MAP（）
 
 void CFlatButton :: DrawItem（LPDRAWITEMSTRUCT lpDrawItemStruct）
 {
 // TODO：将您的代码添加到绘制指定的项目
 CDC dc; 
 dc.Attach（lpDrawItemStruct-> hDC）; //获取设备上下文对象
 CRect rt; 
 rt = lpDrawItemStruct-> rcItem; //获取按钮rect 
 
 UINT状态= lpDrawItemStruct-> itemState; //获取按钮的状态
 if（（state& ODS_SELECTED））
 dc.FillSolidRect（rt，RGB（255，0，0））; （（state& ODS_DISABLED））
 {
 dc.FillSolidRect（rt，RGB（0，255，0））; 
 else 
 {
 if 
 
 
 {
 if（（state& ODS_FOCUS））//如果按钮被聚焦
 {
 //绘制焦点矩形它表示用户
 //该按钮的焦点是
 dc.FillSolidRect（rt，RGB（0，0，255））; 
} 
 else 
 {
 dc.FillSolidRect（rt，RGB（255，255，0））; 
} 
} 
} 
 dc.SetTextColor（RGB（255,255,255））; //将标题的颜色设置为黄色
 CString strTemp; 
 GetWindowText（strTemp）; //获取已设置的标题
 dc.DrawText（strTemp，rt，DT_CENTER | DT_VCENTER | DT_SINGLELINE）; //绘制标题
 
 
 dc.Detach（）; 
 
  

解决方案

主要原因是对话框通常使用BS_DEFPUSHBUTTON和BS_PUSHBUTTON来表明这一点，但是ownerdraw标志是互斥的。

检查这篇文章：它解释了完整的背景：
< a href =http://www.codeproject.com/Articles/1318/COddButton =nofollow> http://www.codeproject.com/Articles/1318/COddButton

With standard buttons if I have OK and Cancel, with default on OK and I press the right arrow the Cancel is focused and pressing enter on the keyboard the Cancel button function is called.

This doesn't happen with ownerdraw buttons. If I press the right arrow the Cancel button is focused but pressing enter on the keyboard the OK button function is called.

How can I have an ownerdraw button with standard behaviour?

This is my class.

BEGIN_MESSAGE_MAP(CFlatButton, CButton)
    //{{AFX_MSG_MAP(CMyClass)
        // NOTE - the ClassWizard will add and remove mapping macros here.
    //}}AFX_MSG_MAP
END_MESSAGE_MAP()

void CFlatButton::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct)
{
    // TODO: Add your code to draw the specified item
    CDC dc;
    dc.Attach(lpDrawItemStruct->hDC);       //Get device context object
    CRect rt;
    rt = lpDrawItemStruct->rcItem;      //Get button rect

    UINT state = lpDrawItemStruct->itemState;   //Get state of the button
    if ( (state & ODS_SELECTED) )
        dc.FillSolidRect(rt, RGB(255, 0, 0));
    else
    {
        if ((state & ODS_DISABLED))
        {
            dc.FillSolidRect(rt, RGB(0, 255, 0));
        }
        else
        {
            if ((state & ODS_FOCUS))       // If the button is focused
            {
                // Draw a focus rect which indicates the user 
                // that the button is focused
                dc.FillSolidRect(rt, RGB(0, 0, 255));
            }
            else
            {
                dc.FillSolidRect(rt, RGB(255, 255, 0));
            }
        }
    }
    dc.SetTextColor(RGB(255,255,255));      // Set the color of the caption to be yellow
    CString strTemp;
    GetWindowText(strTemp);     // Get the caption which have been set
    dc.DrawText(strTemp,rt,DT_CENTER|DT_VCENTER|DT_SINGLELINE);     // Draw out the caption


    dc.Detach();
}

解决方案

The major reason is that the Dialog normally uses BS_DEFPUSHBUTTON and BS_PUSHBUTTON to indicate this, but the ownerdraw flag is mutually exclusive to that.

Check this article: It explains the complete Background: http://www.codeproject.com/Articles/1318/COddButton

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