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copied!<p>The standard behavior of a CDialog is that it designates the <code>Enter</code> key as clicking the OK-button and the <code>ESC</code> key as the cancel-button, these messages are handled in the default handler inside MFC framework. If you want a different behavior than this, you have to override the IDOK and IDCANCEL click-message handlers.</p> <p>However your problem about the edit-box response to the <code>Enter</code> key is a totally different problem itself. It is because edit-box in default, is only for handling single line text entry and does not respond to a <code>Enter</code> key code. </p> <p>To enable the edit-box for multi-line entry, you have to set the <code>Multi-line</code> and <code>Want return</code> property of the edit-box in the dialog editor.</p> <p>Additional infomations after the first comment from the OP -----------------</p> <p>The <code>OK</code> button is high-lighted because it is set as the default respond button of the dialog. Remove the <code>Default Button</code> in the property of this button in the dialog editor. This is, however for the visual display only, you may have to remove this <code>OK</code> button for what you want to work.</p> <p>To disable <code>Enter</code> key as the dialog exit, you have to add a bypass handler as follows:</p> <pre><code>// add a message routing macro entry in the message map ON_BN_CLICKED(IDOK, OnFilterDefaultExitKey) // add a function prototype in the {{AFX_MSG() declaration afx_msg void OnFilterDefaultExitKey(); // add a handler in the class implementation file /* ==================================== */ void CTest1Dlg::OnFilterDefaultExitKey() { // default exit key handler, ignore everything. } </code></pre> <p>However, adding code in this way will also render the <code>OK</code> key completely useless, not responding to any click at all. So you have to add a <code>Done</code> button manually to handle the finalization of the edited data by the user. </p> <pre><code> /* ========================== */ void CTest1Dlg::OnButtonDone() { EndDialog(IDOK); } </code></pre>

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