向控件发送字符串

向其它程序的控件发送字符串:

1 找到控件的父窗口

CWnd *m_pWHW = NULL;
if( (m_pWHW = FindWindow( "class", "caption")) != NULL)
{
    EnumChildWindows( m_pWHW->m_hWnd, mcb, 0);
}

2 在回调函数中找到控件，并执行相应操作

int _stdcall mcb(HWND hwnd,LPARAM lParam)
{
    char pname[128], pclass[128];
    CString strName, strClass;
    
    GetWindowText( hwnd, pname, 64);
    GetClassNameA( hwnd, pclass, 64);
    strName = CString( pname);
    strClass = CString( pclass);
    
    if ( strName == "caption" && strClass == "class")
    {
        //::PostMessageA( hwnd, WM_CHAR, 'A', 0); 
        ::SendMessage( hwnd, WM_SETTEXT, 0, LPARAM("your string"));
        //SetWindowTextA( hwnd, "your string"); 
    }
    
    return 1;
}

 

另：
1 SendMessage(hwnd, WM_COPY 0, 0);
   SendMessage(hwnd, WM_CUT, 0, 0);
   SendMessage(hwnd, WM_PASTE, 0, 0);
2 PostMessage将消息放入消息队列后马上返回，而SendMessage直到窗口过程处理完消息后才返回