Oppure

Loading
03/05/09 22:19
andrex91
Qualcuno saprebbe dirmi il modo per far si che al momento dell'esecuzione il form sia invisibile mentre restino invece visibili i command, textbox e vari oggetti?
Il codice per rendere il form trasparente ce l'ho, pero con esso spariscono anche gli oggetti.
Grazie in anticipo
aaa
04/05/09 8:37
credo che questo in vb6 non sia fattibile......tu vorresti fare l'effetto messenger.....
ho trovato in giro dei codici che facevano al caso tuo in passato , ora pero' non ricordo piu' dove, ma la cosa e' talmente complicata che il gioco non vale la candela, e comunque non si puo' fare con tutti i componenti del form, solo con determinati che supportano alcune prorpieta'....
04/05/09 16:40
Louis
Ciao,
il seguente codice rende trasparente la Form ma non i controlli. E' testato per i controlli Txt e CmdButton, per gli altri ti devi riferire alle singole proprietà per verificarne la fattibilità:

Private Const REG_OR = 2
Private Const REG_MIN = 4
Private Const HWND_TOPMOST = -1
Private Const HWND_NOTOPMOST = -2
Private Const SWP_NOMOVE = &H2
Private Const SWP_NOSIZE = &H1
Private Const TOPMOST_FLAGS = SWP_NOMOVE Or SWP_NOSIZE
Private Declare Function CreateRectRgn Lib "gdi32" (ByVal X1 As Long, ByVal Y1 As Long, _
    ByVal X2 As Long, ByVal Y2 As Long) As Long
Private Declare Function CombineRgn Lib "gdi32" (ByVal hDestRgn As Long, _
    ByVal hSrcRgn1 As Long, ByVal hSrcRgn2 As Long, ByVal nCombineMode As Long) As Long
Private Declare Function SetWindowRgn Lib "user32" (ByVal hwnd As Long, _
    ByVal hRgn As Long, ByVal bRedraw As Boolean) As Long
Private Declare Function DeleteObject Lib "gdi32" (ByVal hObject As Long) As Long
Private Declare Function SetWindowPos Lib "user32" (ByVal hwnd As Long, _
    ByVal hWndInsertAfter As Long, ByVal x As Long, Y, ByVal cx As Long, _
    ByVal cy As Long, ByVal wFlags As Long) As Long

Dim GlassForm As Long
' ------------------------------------------------------------------------------------
Private Sub Form_Click()
TraspGlass 2
' TraspGlass 0 x tornare allo stato precedente non-glass
' TraspGlass 1 ' ...Glass PARZIALE (Resta la caption del form)
' TraspGlass 2 ' ...Glass TOTALE (restano solo i controlli senza form)
End Sub
' ------------------------------------------------------------------------------------
Private Sub Form_Initialize()

' Creazione di due controlli per il test di trasparenza form:

' Primo controllo (TextBox)
Dim MyCTRL1 As String
Dim NewTextBox As TextBox
MyCTRL1 = "NewTextBox"
Set NewTextBox = Controls.Add("VB.TextBox", MyCTRL1)
NewTextBox.BorderStyle = 1
NewTextBox.Appearance = 0
NewTextBox.Text = "TEXT BOX nr. 1"
NewTextBox.Left = 120
NewTextBox.Top = 120
NewTextBox.Height = 300
NewTextBox.Width = 2200
NewTextBox.Visible = True

' Secondo controllo (CommandButton)
Dim MyCTRL2 As String
Dim NewCmdButton As CommandButton
MyCTRL2 = "NewCmdButton"
Set NewCmdButton = Controls.Add("VB.CommandButton", MyCTRL2)
NewCmdButton.Height = 300
NewCmdButton.Width = 2200
NewCmdButton.Left = 120
NewCmdButton.Top = 444
NewCmdButton.Caption = "CMD DI PROVA"
NewCmdButton.Visible = True

Me.Height = 1890
Me.Width = 6000
' Non modificare!!!
Me.ScaleMode = vbPixels
Me.Caption = "Un click con il tasto del mouse su questo form..."

End Sub
' ------------------------------------------------------------------------------------
Private Sub TraspGlass(GlassFX As Integer)

    Dim w As Single, h As Single, Contorno As Single, topEye As Single
    Dim i As Long, k As Long, n As Long, q As Long
    Dim PosTop As Double, PosLeft As Double
    
    ' Conversione su assi X/Y | width/height | scalewidth/scaleheight
    w = ScaleX(Width, vbTwips, vbPixels)
    h = ScaleY(Height, vbTwips, vbPixels)
    
    ' Verifica lo stato...
    If GlassFX = 0 Then
        GlassForm = CreateRectRgn(0, 0, w, h)
        SetWindowRgn hwnd, GlassForm, True
        Exit Sub
    End If
    
    GlassForm = CreateRectRgn(0, 0, 0, 0)
    Contorno = (w - ScaleWidth) / 2
    topEye = h - Contorno - ScaleHeight
    
    If GlassFX = 1 Then
        k = CreateRectRgn(0, 0, w, h)
        n = CreateRectRgn(Contorno, topEye, w - Contorno, h - Contorno)
        CombineRgn GlassForm, k, n, REG_MIN
    End If
    
    ' Traspone la nuova regione sul form...
    For i = 0 To Me.Controls.Count - 1
        If Me.Controls(i).Visible = True Then
            PosLeft = ScaleX(Me.Controls(i).Left, Me.ScaleMode, vbPixels) + Contorno
            PosTop = ScaleX(Me.Controls(i).Top, Me.ScaleMode, vbPixels) + topEye
            q = CreateRectRgn(PosLeft, PosTop, _
            PosLeft + ScaleX(Me.Controls(i).Width, Me.ScaleMode, vbPixels), PosTop + ScaleY(Me.Controls(i).Height, Me.ScaleMode, vbPixels))
            CombineRgn GlassForm, q, GlassForm, REG_OR
        End If
    Next
    
    ' Esegue...
    SetWindowRgn hwnd, GlassForm, True

End Sub
' ------------------------------------------------------------------------------------
Private Sub Form_Load()
    ' Centra il form
    CentraForm Form1
    ' On Top
    MakeTopMost Me.hwnd
End Sub
' ------------------------------------------------------------------------------------
Private Sub Form_QueryUnload(Cancel As Integer, UnloadMode As Integer)
    ' Scarca l'oggetto GlassForm dalla memoria.
    SetWindowRgn hwnd, 0, False
    DeleteObject GlassForm
    ' Scarica il form dalla memoria
    Unload Form1
    Set Form1 = Nothing
End Sub
' ------------------------------------------------------------------------------------
Public Sub CentraForm(MyForm As Form)
    ' Centra il form
    MyForm.Top = (Screen.Height - MyForm.Height) / 2
    MyForm.Left = (Screen.Width - MyForm.Width) / 2
End Sub
' ------------------------------------------------------------------------------------
Sub MakeNormal(Handle As Long)
    SetWindowPos Handle, HWND_NOTOPMOST, 0, 0, 0, 0, TOPMOST_FLAGS
End Sub
' ------------------------------------------------------------------------------------
Sub MakeTopMost(Handle As Long)
    SetWindowPos Handle, HWND_TOPMOST, 0, 0, 0, 0, TOPMOST_FLAGS
End Sub

:k:
aaa