blocks|key|507884|text|尝试以下代码：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|507885|void+CEditExtended::PreTranslateMessage(MSG*+pMsg)
{
+if(pMsg->message+==+WM_KEYUP+)
++++{
++++++++if+(+(LOWORD(pMsg->wParam)+&+VK_CONTROL)+==+VK_CONTROL+)
++++++++{

+++++++++///+blah

++++++++}
++++}

++++return+CEdit::PreTranslateMessage(pMsg);
}|code-block|syntax|javascript|507886|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Try this code:

<pre><code>void CEditExtended::PreTranslateMessage(MSG* pMsg)
{
 if(pMsg-&gt;message == WM_KEYUP )
 {
 if ( (LOWORD(pMsg-&gt;wParam) &amp; VK_CONTROL) == VK_CONTROL )
 {

 /// blah

 }
 }

 return CEdit::PreTranslateMessage(pMsg);
}
</code></pre>

blocks|key|724480|text|另一种无需扩展CEdit类即可实现CTRL%2BA的方法。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|724481|重写具有编辑控件的对话框的PreTranslateMessage()成员函数。|724482|BOOL+CMyDialog::PreTranslateMessage(MSG*+pMsg)
{
++++if+((pMsg->message+==+WM_KEYDOWN)+&&+(pMsg->wParam+==+'A')
+++++++&&+GetKeyState(VK_CONTROL)+<+0)
++++{
++++++++CWnd+*pWnd+=+GetFocus();
++++++++if+(pWnd+!=+NULL)
++++++++{
++++++++++++CString+className;

++++++++++++GetClassName(pWnd->GetSafeHwnd(),+className.GetBuffer(80),+80);
++++++++++++className.ReleaseBuffer();
++++++++++++if+(className.CompareNoCase(_T("edit"))+==+0)
++++++++++++{
++++++++++++++++pWnd->SendMessage(EM_SETSEL,+0,+-1);
++++++++++++++++return+TRUE;
++++++++++++}
++++++++}
++++}

++++return+CDialogEx::PreTranslateMessage(pMsg);
}|code-block|syntax|javascript|724483|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Another way to implement CTRL+A without extending CEdit class.

Override PreTranslateMessage() member function of the dialog that has a edit control.

<pre class="lang-c++ prettyprint-override"><code>BOOL CMyDialog::PreTranslateMessage(MSG* pMsg)
{
 if ((pMsg-&gt;message == WM_KEYDOWN) &amp;&amp; (pMsg-&gt;wParam == 'A')
 &amp;&amp; GetKeyState(VK_CONTROL) &lt; 0)
 {
 CWnd *pWnd = GetFocus();
 if (pWnd != NULL)
 {
 CString className;

 GetClassName(pWnd-&gt;GetSafeHwnd(), className.GetBuffer(80), 80);
 className.ReleaseBuffer();
 if (className.CompareNoCase(_T("edit")) == 0)
 {
 pWnd-&gt;SendMessage(EM_SETSEL, 0, -1);
 return TRUE;
 }
 }
 }

 return CDialogEx::PreTranslateMessage(pMsg);
}
</code></pre>

blocks|key|507961|text|若要为窗口中的所有编辑控件实现Ctrl%2BA，请重写CWnd::PreTranslateMessage以检查键序列以及焦点是否在编辑控件上。如果是，请选择其文本。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|507962|BOOL+CMyWindow::PreTranslateMessage(MSG*+pMsg)
{
++++if+(pMsg->message+==+WM_KEYDOWN+&&+pMsg->wParam+==+'A'+&&+GetKeyState(VK_CONTROL)+<+0)+{
++++++++if+(auto+edit+=+dynamic_cast<CEdit*>(GetFocus()))+{
++++++++++++edit->SetSel(0,+-1,+FALSE);
++++++++++++return+TRUE;
++++++++}
++++}
++++return+__super::PreTranslateMessage(pMsg);
}|code-block|syntax|javascript|507963|entityMap^0|P|P|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

To implement Ctrl+A for all edit controls in a window, override <code>CWnd::PreTranslateMessage</code> to check for the key sequence and whether focus is on an edit control. If so, select its text.

<pre><code>BOOL CMyWindow::PreTranslateMessage(MSG* pMsg)
{
 if (pMsg-&gt;message == WM_KEYDOWN &amp;&amp; pMsg-&gt;wParam == 'A' &amp;&amp; GetKeyState(VK_CONTROL) &lt; 0) {
 if (auto edit = dynamic_cast&lt;CEdit*&gt;(GetFocus())) {
 edit-&gt;SetSel(0, -1, FALSE);
 return TRUE;
 }
 }
 return __super::PreTranslateMessage(pMsg);
}
</code></pre>

I am trying to implement select all(via ctrl-a) in a CEdit control. I'm doing this by making a class which inherits CEdit and adding a handler for WM_KEYDOWN like this:

<pre><code>void CEditExtended::OnKeyDown( UINT nChar, UINT nRepCnt, UINT nFlags )
{ 
 if((nChar == 0x41) &amp;&amp; (GetKeyState(VK_CONTROL) &amp; 0x8000) != 0))
 SetSel(0, -1);

 CEdit::OnKeyDown(nChar, nRepCnt, nFlags);
}
</code></pre>

Looking around on the web, this should work, but it never registers both ctrl and a at the same time, either one or the other.

Getting select all(ctrl-a) to work on a CEdit control

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我正在尝试在一个CEdit控件中实现select all(通过ctrl-a)。为此，我创建了一个继承CEdit的类并为WM_KEYDOWN添加了一个处理程序，如下所示：void CEditExtended::OnKeyDown( UINT nChar, UINT nRepCnt, UINT nFlags ){     ...

问让select all(ctrl-a)在CEdit控件上工作
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问让select all(ctrl-a)在CEdit控件上工作
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