Finding any window and placing text in it

I would like to make a feature on my program that you can drag a pointer into a text box on another window or program and set text into that window. Then I want to hit the enter key on that text box. Well, I probably could figure that part out. But I don't know how to get the exact object.

Can anyone help me out with this?

This is how to indentify a window that is clicked on. Listboxes are windows.

From www.allapi.net

Code:

---

Private Type POINTAPI
    X As Long
    Y As Long
End Type
Private Type RECT
    Left As Long
    Top As Long
    Right As Long
    Bottom As Long
End Type
Private Declare Function WindowFromPoint Lib "user32" (ByVal xPoint As Long, ByVal yPoint As Long) As Long
Private Declare Function GetCursorPos Lib "user32" (lpPoint As POINTAPI) As Long
Private Declare Function ExtTextOut Lib "gdi32" Alias "ExtTextOutA" (ByVal hdc As Long, ByVal X As Long, ByVal Y As Long, ByVal wOptions As Long, ByVal lpRect As Any, ByVal lpString As String, ByVal nCount As Long, lpDx As Long) As Long
Private Declare Function GetWindowRect Lib "user32" (ByVal hwnd As Long, lpRect As RECT) As Long
Private Declare Function GetTextExtentPoint32 Lib "gdi32" Alias "GetTextExtentPoint32A" (ByVal hdc As Long, ByVal lpsz As String, ByVal cbString As Long, lpSize As POINTAPI) As Long
Private Declare Function GetWindowDC Lib "user32" (ByVal hwnd As Long) As Long
Private Sub Form_MouseUp(Button As Integer, Shift As Integer, X As Single, Y As Single)
    'KPD-Team 1998
    'URL: http://www.allapi.net/
    'E-Mail: [email protected]
    Dim Pt As POINTAPI, mWnd As Long, WR As RECT, nDC As Long
    Dim TextSize As POINTAPI, CX As Long, CY As Long
    'Get the current cursor position
    GetCursorPos Pt
    'Get the window under the cursor
    mWnd = WindowFromPoint(Pt.X, Pt.Y)
    'Get the window's position
    GetWindowRect mWnd, WR
    'Get the window'zs device context
    nDC = GetWindowDC(mWnd)
    'Get the height and width of our text
    GetTextExtentPoint32 nDC, "Hello !", Len("Hello !"), TextSize
    For CX = 1 To WR.Right - WR.Left Step TextSize.X
        For CY = 1 To WR.Bottom - WR.Top Step TextSize.Y
            'Draw the text on the window
            ExtTextOut nDC, CX, CY, 0, ByVal 0&, "Hello !", Len("Hello !"), ByVal 0&
        Next
    Next
End Sub
Private Sub Form_Paint()
    Me.CurrentX = 0
    Me.CurrentY = 0
    Me.Print "Click on this form," + vbCrLf + "Hold the mouse button," + vbCrLf + "drag the mouse over another window," + vbCrLf + "release the mouse button" + vbCrLf + "and see what happens!"
End Sub

---

How can i see if the object they MouseUp on is a text box or combo box, label or something your can Set Text to? Then Set text in it? Not like what u just did