How can send message to an notepad ? [modified]

[mesajflaviu]

I open an notepad application :

void CTestMessageView::OnHelpStartapplication()
{
// TODO: Add your command handler code here

ShellExecute(m\_hWnd,"open","notepad.exe",NULL,NULL,SW\_SHOWNORMAL);

}

and I want to send some message to notepad :

void CTestMessageView::OnHelpSendmessage()
{
// TODO: Add your command handler code here

CString sTemp = "Test message\\n";

HWND hWnd = ::FindWindow("Notepad",NULL);
if(hWnd)
{

// ::PostMessage(hWnd,WM_CLOSE,0,0);
::PostMessage(hWnd,WM_CHAR,(WPARAM)'1',0);
::PostMessage(hWnd,WM_KEYDOWN,'1',0);
::PostMessage(hWnd,WM_SETTEXT,0,(LPARAM)(LPCTSTR)sTemp);
::PostMessage(hWnd,EM_REPLACESEL,0,(LPARAM)(LPCTSTR)sTemp);
}
}

but only first message WM_CLOSE ( comment one ) is receipt by notepad , other , not . I think that other message then WM_CLOSE is addressed for view of notepad , not the main frame window of the notepad . My question is , how can I send message to the view , not the main frame window of notepad ?

modified on Saturday, January 1, 2011 9:13 AM

[Espen Harlinn]

Do an EnumChildWindows[^] on your hWnd and locate the edit control Regards Espen Harlinn

[mesajflaviu]

Thanks , can you give me an little sample code of what I get of the view child window ?

modified on Saturday, January 1, 2011 11:00 AM

[_Superman_]

What exactly are you trying to do here? Opening notepad and then sending it a WM_CLOSE does not make sense. Notepad also takes a command line parameter if you want to open a file in it. For eample - notepad.exe c:\windows\win.ini

«_Superman_»  _I love work. It gives me something to do between weekends.

_Microsoft MVP (Visual C++)

Polymorphism in C

[normanS]

I think he's trying to open Notepad and insert some text (the sTemp string.) What he's found is 4 ways to insert text which do not work, and also found that sending a WM_CLOSE does work. It's a start.

[Luc Pattyn]

you can't just pass pointers from one process to another process; they must be meaningful and accessible for the receiver, and in general buffers at the sender are neither to the receiver. It would take some calls to VirtualAllocEx, WriteProcessMemory, and the like to achieve such things. But then, why would you? if you want to open Notepad on an empty document and then "type" some, why not simply create a text file first, then open it with Notepad? You wouldn't need any Win32 API function to do that. :)

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