如果我有 OK 和 Cancel，则使用标准按钮，默认为 OK，然后按右箭头，取消聚焦，然后按键盘上的 enter 调用取消按钮功能。
所有者绘制按钮不会发生这种情况。如果我按下右箭头，取消按钮将被聚焦，但按下键盘上的 enter 会调用 OK 按钮功能。
如何拥有具有标准行为的所有者绘制按钮？
这是我的课。
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();
}