根据输入的文本自动包装一个编辑框. [英] wrap a edit box automatically according to a entered text .

问题描述

嗨
我有一个编辑框，我想像自动调整选项一样.意味着如果我输入长文本，则编辑框的长度也会增加.如果文本较小，则文本框的长度应减小.
我正在使用VC ++/MFC.

在此先感谢

解决方案

您可以使用DrawText并将DT_CALCRECT放在nFormat中.这样可以提供所需的宽度和高度，并可以相应地更新编辑框(例如，在每个按键事件上).

http://msdn.microsoft.com/en-us/library/a6x7y2a4% 28VS.80％29.aspx [ ^ ]

祝你好运！

E.F. Nijboer是对的.您可以在对话框中处理EN_CHANGE事件，例如:

void CYourDlg::OnEnChangeEdit1()
{
   CWnd* pWnd = GetDlgItem(IDC_EDIT1);
   //get the text
   CString text;
   pWnd->GetWindowText(text);
   //get the box size
   CRect boxRect;
   pWnd->GetWindowRect(boxRect);
   //get a temporary DC to compute text size
   CDC* pDC = pWnd->GetDC();
   //compute text size
   CRect textRect = boxRect;
   pDC->DrawText(text, textRect, DT_CALCRECT);
   //release temporary DC
   pWnd->ReleaseDC(pDC);
   //update the box width
   pWnd->SetWindowPos(NULL, 0, 0, textRect.Width(), boxRect.Height(), SWP_NOMOVE | SWP_NOZORDER);
}

hi
i have one edit box i want do like autofit option. means if i enter long text the editbox length also increase. if text is small text box length should decrease.
i am using VC++/MFC.

thanks in advance

解决方案

You can use DrawText and put DT_CALCRECT in nFormat. This gives you the width and height needed and can update the editbox accordingly (for example on each key press event).

http://msdn.microsoft.com/en-us/library/a6x7y2a4%28VS.80%29.aspx[^]

Good luck!

E.F. Nijboer is right. You can handle the EN_CHANGE event in your dialog for example:

void CYourDlg::OnEnChangeEdit1()
{
   CWnd* pWnd = GetDlgItem(IDC_EDIT1);
   //get the text
   CString text;
   pWnd->GetWindowText(text);
   //get the box size
   CRect boxRect;
   pWnd->GetWindowRect(boxRect);
   //get a temporary DC to compute text size
   CDC* pDC = pWnd->GetDC();
   //compute text size
   CRect textRect = boxRect;
   pDC->DrawText(text, textRect, DT_CALCRECT);
   //release temporary DC
   pWnd->ReleaseDC(pDC);
   //update the box width
   pWnd->SetWindowPos(NULL, 0, 0, textRect.Width(), boxRect.Height(), SWP_NOMOVE | SWP_NOZORDER);
}

这篇关于根据输入的文本自动包装一个编辑框.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！