how do i refresh the screen

[mrz]

i need to write some code that will do the same as clicking on the desktop and pressing F5

refresh the screen.

how can i do that ?

[SonGouki]

You need to use some APIs, the code to refresh the Desktop is as follows:

Declarations:

Private Const RDW_INVALIDATE = &H1
Private Const RDW_INTERNALPAINT = &H2
Private Const RDW_ERASE = &H4
Private Const RDW_VALIDATE = &H8
Private Const RDW_NOINTERNALPAINT = &H10
Private Const RDW_NOERASE = &H20
Private Const RDW_NOCHILDREN = &H40
Private Const RDW_ALLCHILDREN = &H80
Private Const RDW_UPDATENOW = &H100
Private Const RDW_ERASENOW = &H200
Private Const RDW_FRAME = &H400
Private Const RDW_NOFRAME = &H800

Private Type RECT
        Left As Long
        Top As Long
        Right As Long
        Bottom As Long
End Type

Private Declare Function CreateRectRgnIndirect _
                Lib "gdi32" _
                (lpRect As RECT) As Long

Private Declare Function RedrawWindow _
                Lib "user32" _
                (ByVal hwnd As Long, lprcUpdate As RECT, _
                ByVal hrgnUpdate As Long, ByVal fuRedraw As Long) As Long

Code to perform the refresh:

Private Sub cmdRefresh_Click()
   Dim udtScrDim As RECT
   Dim lReturn As Long
   Dim hRegion As Long
   
   udtScrDim.Left = 0
   udtScrDim.Top = 0
   udtScrDim.Right = Screen.Width
   udtScrDim.Bottom = Screen.Height
   hRegion = CreateRectRgnIndirect(udtScrDim)
   
   If hRegion <> 0 Then
      lReturn = RedrawWindow(0, udtScrDim, hRegion, _
                RDW_ERASE Or RDW_FRAME Or RDW_INVALIDATE Or RDW_UPDATENOW Or RDW_INTERNALPAINT Or RDW_ALLCHILDREN)
   End If
End Sub

As I said above, this will update the desktop, if you wish to update a specific Window then you need to specify that Window's handle in the first argument of the RedrawWindow call. You will also need to adjust the size of the update rectangle area and the region rectangle area. You may also want to modify the fuRedraw flags to satisfy your needs, these are only the suggested ones to use when refreshing the desktop.

Hope this is what you were looking for, Later.

[mrz]

this code does refresh the desktop, but it doesnt do the job.
you see, i try to make a program that will change the wallpaper to a specific html file.
i did everything but one small detail.
if i dont press F5 on the desktop, then i will see the changes only after i restart the computer.
although this code refreshes the desktop, it is not the same as pressing F5 on it.
maybe you have in mind another code that can help me ?