Paste the following code in a standard module and run the macro named "FindMe" for an example of how to position message boxes.
Option Explicit
Type RECT
Left As Long
Top As Long
Right As Long
Bottom As Long
End Type
Public Declare Function UnhookWindowsHookEx Lib "user32" ( _
ByVal hHook As Long) As Long
Public Declare Function GetWindowLong Lib "user32" Alias _
"GetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long) _
As Long
Public Declare Function GetCurrentThreadId Lib "kernel32" () As Long
Public Declare Function SetWindowsHookEx Lib "user32" Alias _
"SetWindowsHookExA" (ByVal idHook As Long, ByVal lpfn As Long, _
ByVal hmod As Long, ByVal dwThreadId As Long) As Long
Public Declare Function SetWindowPos Lib "user32" ( _
ByVal hwnd As Long, ByVal hWndInsertAfter As Long, _
ByVal x As Long, ByVal y As Long, ByVal cx As Long, _
ByVal cy As Long, ByVal wFlags As Long) As Long
Public Declare Function GetWindowRect Lib "user32" (ByVal hwnd _
As Long, lpRect As RECT) As Long
Public Declare Function GetActiveWindow Lib "user32" () As Long
Public Declare Function FindWindow Lib "user32" Alias "FindWindowA" _
(ByVal lpClassName As String, ByVal lpWindowName As String) As Long
Public Const GWL_HINSTANCE = (-6)
Public Const SWP_NOSIZE = &H1
Public Const SWP_NOZORDER = &H4
Public Const SWP_NOACTIVATE = &H10
Public Const HCBT_ACTIVATE = 5
Public Const WH_CBT = 5
Public hHook As Long
Public hXL As Long
Function TopRight(ByVal lMsg As Long, ByVal wParam As Long, _
ByVal lParam As Long) As Long
Dim rectXL As RECT, rectMsg As RECT
Dim x As Long, y As Long
Dim hMsgbox As Long
If lMsg = HCBT_ACTIVATE Then
hMsgbox = GetActiveWindow
GetWindowRect hXL, rectXL
GetWindowRect wParam, rectMsg
x = (rectXL.Left + (rectXL.Right - rectXL.Left) * 0.9) - _
((rectMsg.Right - rectMsg.Left) / 2)
y = (rectXL.Top + (rectXL.Bottom - rectXL.Top) * 0.1) - _
((rectMsg.Bottom - rectMsg.Top) / 2)
SetWindowPos wParam, 0, x, y, 0, 0, _
SWP_NOSIZE Or SWP_NOZORDER Or SWP_NOACTIVATE
UnhookWindowsHookEx hHook
End If
TopRight = False
End Function
Private Sub ShowMsgBoxTopRight()
Dim hInst As Long
Dim Thread As Long
hXL = FindWindow("XLMAIN", Application.Caption)
hInst = GetWindowLong(hXL, GWL_HINSTANCE)
Thread = GetCurrentThreadId()
hHook = SetWindowsHookEx(WH_CBT, AddressOf TopRight, hInst, Thread)
MsgBox "Wow, look at me up here !", , "Top right"
End Sub
Function BottomRight(ByVal lMsg As Long, ByVal wParam As Long, _
ByVal lParam As Long) As Long
Dim rectXL As RECT, rectMsg As RECT
Dim x As Long, y As Long
Dim hMsgbox As Long
If lMsg = HCBT_ACTIVATE Then
hMsgbox = GetActiveWindow
GetWindowRect hXL, rectXL
GetWindowRect wParam, rectMsg
x = (rectXL.Left + (rectXL.Right - rectXL.Left) * 0.9) - _
((rectMsg.Right - rectMsg.Left) / 2)
y = (rectXL.Top + (rectXL.Bottom - rectXL.Top) * 0.9) - _
((rectMsg.Bottom - rectMsg.Top) / 2)
SetWindowPos wParam, 0, x, y, 0, 0, _
SWP_NOSIZE Or SWP_NOZORDER Or SWP_NOACTIVATE
UnhookWindowsHookEx hHook
End If
BottomRight = False
End Function
Private Sub ShowMsgBoxBottomRight()
Dim hInst As Long
Dim Thread As Long
hXL = FindWindow("XLMAIN", Application.Caption)
hInst = GetWindowLong(hXL, GWL_HINSTANCE)
Thread = GetCurrentThreadId()
hHook = SetWindowsHookEx(WH_CBT, AddressOf BottomRight, hInst, Thread)
MsgBox "Hey, look down here !", , "Bottom right"
End Sub
Function TopLeft(ByVal lMsg As Long, ByVal wParam As Long, _
ByVal lParam As Long) As Long
Dim rectXL As RECT, rectMsg As RECT
Dim x As Long, y As Long
Dim hMsgbox As Long
If lMsg = HCBT_ACTIVATE Then
hMsgbox = GetActiveWindow
GetWindowRect hXL, rectXL
GetWindowRect wParam, rectMsg
x = (rectXL.Left + (rectXL.Right - rectXL.Left) * 0.1) - _
((rectMsg.Right - rectMsg.Left) / 2)
y = (rectXL.Top + (rectXL.Bottom - rectXL.Top) * 0.1) - _
((rectMsg.Bottom - rectMsg.Top) / 2)
SetWindowPos wParam, 0, x, y, 0, 0, _
SWP_NOSIZE Or SWP_NOZORDER Or SWP_NOACTIVATE
UnhookWindowsHookEx hHook
End If
TopLeft = False
End Function
Private Sub ShowMsgBoxTopLeft()
Dim hInst As Long
Dim Thread As Long
hXL = FindWindow("XLMAIN", Application.Caption)
hInst = GetWindowLong(hXL, GWL_HINSTANCE)
Thread = GetCurrentThreadId()
hHook = SetWindowsHookEx(WH_CBT, AddressOf TopLeft, hInst, Thread)
MsgBox "Now look up here !", , "Top left"
End Sub
Function BottomLeft(ByVal lMsg As Long, ByVal wParam As Long, _
ByVal lParam As Long) As Long
Dim rectXL As RECT, rectMsg As RECT
Dim x As Long, y As Long
Dim hMsgbox As Long
If lMsg = HCBT_ACTIVATE Then
hMsgbox = GetActiveWindow
GetWindowRect hXL, rectXL
GetWindowRect wParam, rectMsg
x = (rectXL.Left + (rectXL.Right - rectXL.Left) * 0.1) - _
((rectMsg.Right - rectMsg.Left) / 2)
y = (rectXL.Top + (rectXL.Bottom - rectXL.Top) * 0.9) - _
((rectMsg.Bottom - rectMsg.Top) / 2)
SetWindowPos wParam, 0, x, y, 0, 0, _
SWP_NOSIZE Or SWP_NOZORDER Or SWP_NOACTIVATE
UnhookWindowsHookEx hHook
End If
BottomLeft = False
End Function
Private Sub ShowMsgBoxBottomLeft()
Dim hInst As Long
Dim Thread As Long
hXL = FindWindow("XLMAIN", Application.Caption)
hInst = GetWindowLong(hXL, GWL_HINSTANCE)
Thread = GetCurrentThreadId()
hHook = SetWindowsHookEx(WH_CBT, AddressOf BottomLeft, hInst, Thread)
MsgBox "Look down to the left !", , "Bottom left"
End Sub
Sub FindMe()
Run "ShowMsgBoxTopRight"
Run "ShowMsgBoxBottomRight"
Run "ShowMsgBoxTopLeft"
Run "ShowMsgBoxBottomLeft"
MsgBox "Back in the center where I belong.", , "Home at last."
End Sub