.
In a Routine Module :
Option Explicit
Sub shwfrm()
UserForm1.Show
SetWindowSize2
End Sub
Sub SetWindowSize2()
Dim iMaxWidth As Integer
Dim iMaxHeight As Integer
Dim iStartX As Integer
Dim iStartY As Integer
Dim iDesiredWidth As Integer
Dim iDesiredHeight As Integer
iStartX = 5 ' Distance from left
iStartY = 5 ' Distance from top
iDesiredWidth = 0
iDesiredHeight = 0
With Application
.WindowState = xlMaximized
iMaxWidth = Application.Width
iMaxHeight = Application.Height
' Adjust for starting point
iMaxWidth = iMaxWidth - iStartX
iMaxHeight = iMaxHeight - iStartY
If iDesiredWidth > iMaxWidth Then
iDesiredWidth = iMaxWidth
End If
If iDesiredHeight > iMaxHeight Then
iDesiredHeight = iMaxHeight
End If
.WindowState = xlNormal
.Top = iStartY
.Left = iStartX
.Width = iDesiredWidth
.Height = iDesiredHeight
End With
End Sub
In the UserForm code module :
Option Explicit
'Object variable to trigger application events
Private WithEvents XLApp As Excel.Application
#If VBA7 Then
Dim mXLHwnd As LongPtr 'Excel's window handle
Dim mhwndForm As LongPtr 'The userform's window handle
private Declare PtrSafe Function FindWindowA Lib "user32" (ByVal lpClassName As String, ByVal lpWindowName As String) As LongPtr
#If Win64 Then
private Declare PtrSafe Function SetWindowLongA Lib "user32" Alias "SetWindowLongPtrA" (ByVal hwnd As LongPtr, ByVal nIndex As Long, ByVal dwNewLong As LongPtr) As LongPtr
#Else
private Declare PtrSafe Function SetWindowLongA Lib "user32" (ByVal hwnd As LongPtr, ByVal nIndex As Long, ByVal dwNewLong As LongPtr) As LongPtr
#End If
private Declare PtrSafe Function SetForegroundWindow Lib "user32" (ByVal hwnd As LongPtr) As Long
#Else
Dim mXLHwnd As Long 'Excel's window handle
Dim mhwndForm As Long 'The userform's window handle
Private Declare Function FindWindowA Lib "user32" (ByVal lpClassName As String, ByVal lpWindowName As String) As Long
Private Declare Function SetWindowLongA Lib "user32" (ByVal hwnd As Long, ByVal nIndex As Long, ByVal dwNewLong As Long) As Long
Private Declare Function SetForegroundWindow Lib "user32" (ByVal hwnd As Long) As Long
#End If
Const GWL_HWNDPARENT As Long = -8
Private Sub UserForm_Initialize()
If Val(Application.Version) >= 15 Then 'Only makes sense on Excel 2013 and up
Set XLApp = Application
mhwndForm = FindWindowA("ThunderDFrame", caption)
End If
End Sub
Private Sub XLApp_WindowActivate(ByVal Wb As Workbook, ByVal Wn As Window)
If Val(Application.Version) >= 15 And mhwndForm <> 0 Then 'Basear o form na janela ativa do Excel.
mXLHwnd = Application.hwnd 'Always get because in Excel 15 SDI each wb has its window with different handle.
SetWindowLongA mhwndForm, GWL_HWNDPARENT, mXLHwnd
SetForegroundWindow mhwndForm
End If
End Sub
Private Sub XLApp_WindowResize(ByVal Wb As Workbook, ByVal Wn As Window)
If Not Me.Visible Then Me.Show vbModeless
End Sub
Private Sub XLApp_WorkbookBeforeClose(ByVal Wb As Workbook, Cancel As Boolean)
SetWindowLongA mhwndForm, GWL_HWNDPARENT, 0&
End Sub