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API to Put text into a window
Posted on 2000-04-09
Is there an API that can put text into a window? SetWindowText is close to what I want but it only puts the text into windows caption of the title bar. I want to put the text into the window.
Right now I'm using SendKeys to do the job but if there's a cleaner way I'd sure like to know it. Thanks
Right now I'm using SendKeys to do the job but if there's a cleaner way I'd sure like to know it. Thanks
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9 Comments
Not sure what kind of window to which you want to set the text. In any case you will need FindWindow to get the top level window handle (hWnd) and FindWindowEx to the the hWnd of any child controls on the top level. In most cases you will use SendMessage and some window message to set the text. If it were a textbox you would use WM_SETTEXT. For instance:
Dim lTophWnd&, lChildhWnd&, lRet&
lTophWnd = FindWindow("classname", "caption") <- substitute vbNullString for an unknown
lChildhWnd = FindWindowEx(lTophWnd, 0&, "classname", vbNullString)
lRet = SendMessage(lChildhWnd, WM_SETTEXT, 0&, ByVal "foo")
If its some other type of control let me know.
Dim lTophWnd&, lChildhWnd&, lRet&
lTophWnd = FindWindow("classname", "caption") <- substitute vbNullString for an unknown
lChildhWnd = FindWindowEx(lTophWnd, 0&, "classname", vbNullString)
lRet = SendMessage(lChildhWnd, WM_SETTEXT, 0&, ByVal "foo")
If its some other type of control let me know.
It is a text box. I have the handle for it but haven't been able to get this to work. I don't know the proper value to use for WM_SETTEXT and the order of the SendMessage function I found appears different than the one in your example. Below is the function I have:
Declare Function SendMessage Lib "user32.dll" Alias "SendMessageA" (ByVal hWnd As Long, ByVal Msg As Long, wParam As Any, lParam As Any) As Long
Declare Function SendMessage Lib "user32.dll" Alias "SendMessageA" (ByVal hWnd As Long, ByVal Msg As Long, wParam As Any, lParam As Any) As Long
Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Integer, ByVal lParam As Long) As Long
Public Const WM_SETTEXT = &HC
Call SendMessageByString(textbo
try that...
Public Const WM_SETTEXT = &HC
Call SendMessageByString(textbo
try that...
It is a text box. I have the handle for it but haven't been able to get this to work. I don't know the proper value to use for WM_SETTEXT and the order of the SendMessage function I found appears different than the one in your example. Below is the function I have:
Declare Function SendMessage Lib "user32.dll" Alias "SendMessageA" (ByVal hWnd As Long, ByVal Msg As Long, wParam As Any, lParam As Any) As Long
Declare Function SendMessage Lib "user32.dll" Alias "SendMessageA" (ByVal hWnd As Long, ByVal Msg As Long, wParam As Any, lParam As Any) As Long
When I refreshed this screen it automatically rejected connivers answer and reposted my last comment... sorry. I'll test the answer a bit later and comment again what I find out. Thanks
there is no value for WM_SETEXT, it is a constant value that you declare as pointed out above. It is the message being sent using the SendMessage api call. SendMessage using the message WM_SETEXT takes as the paramaters:
hWnd: handle to the destination window
Msg: WM_SETTEXT (message to send)
wParam: (not used, set to 0)
lParam: string that you want to send
notice lParam is declared As Any so you can make it whatever you want. Declare it as a string
Declare Function SendMessage Lib "user32.dll" Alias "SendMessageA" (ByVal hWnd As Long, ByVal Msg As Long, wParam As Any, lParam As String) As Long
And implement it:
Call SendMessageByString(textbo
hWnd: handle to the destination window
Msg: WM_SETTEXT (message to send)
wParam: (not used, set to 0)
lParam: string that you want to send
notice lParam is declared As Any so you can make it whatever you want. Declare it as a string
Declare Function SendMessage Lib "user32.dll" Alias "SendMessageA" (ByVal hWnd As Long, ByVal Msg As Long, wParam As Any, lParam As String) As Long
And implement it:
Call SendMessageByString(textbo
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