如何在另一个Dilog的源代码中获取一个对话框的TextBox的句柄? [英] how to get the handle of a TextBox of one Dialog in another Dilog's sourcecode?

问题描述

谁能指导我，如何在另一个Dilog的源代码中获取一个对话框的TextBox的句柄.而且这两个Dialog窗口都属于同一应用程序.

请尽快帮助我.谢谢

Hi,
Can any one please guide me, how to get the handle of a TextBox of one Dialog in another Dilog''s source-code. And here both Dialog windows are belongs to same application.

Kindly please help me soon.Thanks

推荐答案

如果您拥有对话框的句柄，则可以简单地使用SendMessage()调用并以LRESULT形式返回该句柄.

使用伪代码:

If you have the handle to the dialog, you can simply use a SendMessage() call and return the handle cast as an LRESULT.

Using pseudo-code:

//in target dialog (message catcher) include the message id
#define MSG_GETHANDLE (WM_APP+1)
//...include in message map
BEGIN_MESSAGE_MAP( TargetDialog, CDialog )
	ON_MESSAGE( MSG_GETHANDLE, OnGetHandle)
END_MESSAGE_MAP()
//...define method
LRESULT TargetDialog::OnGetHandle(WPARAM,LPARAM)
{
  ...
  return (LRESULT) handleTextBox;
}

//Within your second dialog, just send the request message and interpret response
CEdit *textbox = (CEdit *)TargetDialog->SendMessage(MSG_GETHANDLE,0,0);
//now you can use textbox

但是，我应该说，直接写到另一个对话框的内部控件可能被认为是不好的做法.更好的方法是在GUI中发送数据请求或更改请求，并让父对话框更改控件.

I should say however, that it can be considered bad practice to write directly to another dialog''s internal controls. A better method would be to send a request for data or for a change in the GUI and let the parent dialog change the controls.

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