MFC CEdit失去焦点处理程序 [英] MFC CEdit lose focus handler

问题描述

我正在使用文档/视图架构创建MFC程序.在视图中，我调用扩展CEdit的单元格类以绘制文本框.效果很好，但是，当我尝试捕获该文本框的焦点丢失消息时，什么也没发生.我试图覆盖PreTranslateMessage，但是没有用.

I am creating a MFC program using the document/view architecture. In the view I call on a cell class that extends CEdit to draw a text box. That works fine, however, when I try to catch a lose focus message for that text box nothing happens. I tried to overwrite PreTranslateMessage but that didn't work.

这是CGridView.cpp类中的代码:

Here's the code in the CGridView.cpp class:

void CGridView::OnInsertText()
{
    CWnd* pParentWnd = this;
    CellText* pEdit = new CellText(&grid, pParentWnd);

    Invalidate();   
    UpdateWindow();
}

CellText.cpp:

the CellText.cpp:

CellText::CellText(Grid *pgrid, CWnd* pParentWnd)
{

    int *pcoordinates = pgrid->GetSelectedCellCoodrinates();
    cedit.Create(ES_MULTILINE | WS_CHILD | WS_VISIBLE | WS_TABSTOP | WS_BORDER, CRect(*pcoordinates+10, *(pcoordinates+1)+10, *(pcoordinates+2)-10, *(pcoordinates+3)-10), pParentWnd, 1);

    cell = pgrid->GetSelectedCell();
    pgrid->SetCellType(cell, "text");

    grid = pgrid;
}


BEGIN_MESSAGE_MAP(CellText, CEdit)
    ON_WM_KILLFOCUS()
    ON_WM_KEYDOWN()
END_MESSAGE_MAP()



// CellText message handlers

void CellText::OnKillFocus(CWnd* pNewWnd)
{
    CEdit::OnKillFocus(pNewWnd);

    CString str;
    GetWindowTextW(str);
    grid->SetCellText(cell, str);

    cedit.DestroyWindow(); 
}

BOOL CellText::PreTranslateMessage(MSG* pMsg) 
{
    if(pMsg->message==WM_KEYDOWN)
    {
        if(pMsg->wParam==VK_UP)
        {

        }
    }   

    return CWnd::PreTranslateMessage(pMsg);
}

当我调试时，根本没有调用onkillfocus和pretranslatemessage.

When I debug, the onkillfocus and pretranslatemessage aren't called at all.

谢谢

推荐答案

您必须在父窗口中处理EN_KILLFOCUS通知代码.您不必从CEdit派生出来.

You have to handle the EN_KILLFOCUS notification code in the parent window. You shouldn't have to derive from CEdit to do that.

EN_KILLFOCUS通知代码

更新:

编辑控件的父窗口接收此通知代码 通过WM_COMMAND消息.

The parent window of the edit control receives this notification code through a WM_COMMAND message.

wParam::LOWORD包含编辑控件的标识符.这 HIWORD指定通知代码.

wParam: The LOWORD contains the identifier of the edit control. The HIWORD specifies the notification code.

lParam:-处理编辑控件.

这篇关于MFC CEdit失去焦点处理程序的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！