Buenas esta es una simple funcion para agregar un progreso indefinido a las barra de progreso tal como lo hacen muchos programas o cuando se ejecuta una busqueda en el disco
una imagen de ejemplo
(http://casakok.dk/images/progress_bar.gif)
agregar un progressbar1 (de la version Common Controls 5)
Option Explicit
Private Declare Function GetWindowLong Lib "user32" Alias "GetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long) As Long
Private Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long, ByVal dwNewLong As Long) As Long
Private Declare Function SendMessageLong Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
Const GWL_STYLE = (-16)
Private Const WM_USER As Long = &H400
Private Const PBS_MARQUEE As Long = 8
Private Const PBM_SETMARQUEE = (WM_USER + 10)
Private Sub Form_Load()
Dim Ret As Long
Ret = SetStyleMarquee(ProgressBar1.hwnd, 50)
If Ret = False Then
MsgBox "No se pudo aplicar el estilo"
End If
End Sub
Public Function SetStyleMarquee(hwnd As Long, Velocity As Long) As Boolean
SetWindowLong hwnd, GWL_STYLE, GetWindowLong(hwnd, GWL_STYLE) Or PBS_MARQUEE
SetStyleMarquee = SendMessageLong(hwnd, PBM_SETMARQUEE, 1, Velocity)
End Function
Lo compilan y agregan un archivo Proyecto1.exe.manifest junto al ejecutable, sino no funciona.
Me han dicho que con algunos themes de windows no funciona. aver que les pasa a ustedes.
Aca le implente esta funcion a la clase de Cobein para crear el progresbar con las apis.
'---------------------------------------------------------------------------------------
' Module : cProgBar
' DateTime : 28/07/2008 09:23
' Author : Cobein
' Mail : cobein27@hotmail.com
' WebPage : http://cobein27.googlepages.com/vb6
' Purpose : Mini ProgressBar class
' Usage : At your own risk
' Requirements: None
' Distribution: You can freely use this code in your own
' applications, but you may not reproduce
' or publish this code on any web site,
' online service, or distribute as source
' on any media without express permission.
'
' History : 28/07/2008 First Cut....................................................
'---------------------------------------------------------------------------------------
Option Explicit
Private Const PROGRESS_CLASSA As String = "msctls_progress32"
Private Const WS_VISIBLE As Long = &H10000000
Private Const WS_CHILD As Long = &H40000000
Private Const WM_USER As Long = &H400
Private Const PBM_SETPOS As Long = (WM_USER + 2)
Private Const PBS_SMOOTH As Long = &H1
Private Const PBS_VERTICAL As Long = &H4
Private Const PBS_MARQUEE As Long = 8
Private Const PBM_SETMARQUEE = (WM_USER + 10)
Private Declare Function CreateWindowEx Lib "user32" Alias "CreateWindowExA" (ByVal dwExStyle As Long, ByVal lpClassName As String, ByVal lpWindowName As String, ByVal dwStyle As Long, ByVal x As Long, ByVal y As Long, ByVal nWidth As Long, ByVal nHeight As Long, ByVal hWndParent As Long, ByVal hMenu As Long, ByVal hInstance As Long, lpParam As Any) As Long
Private Declare Function DestroyWindow Lib "user32" (ByVal hwnd As Long) As Long
Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
Private Declare Function SendMessageLong Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
Private c_lhWnd As Long
Private c_lVal As Long
Public Function CreateProgBar( _
ByVal lhWndOwner As Long, _
ByVal Left As Long, _
ByVal Top As Long, _
ByVal Width As Long, _
ByVal Heght As Long, _
Optional ByVal bHorizontal As Boolean = True, _
Optional ByVal bSmooth As Boolean = False, _
Optional ByVal bMarquee As Boolean = False, _
Optional ByVal Velocity As Integer = 0) As Boolean
Dim lFlag As Long
lFlag = WS_CHILD Or WS_VISIBLE
If Not bHorizontal Then lFlag = lFlag Or PBS_VERTICAL
If bSmooth Then lFlag = lFlag Or PBS_SMOOTH
If bMarquee Then lFlag = lFlag Or PBS_MARQUEE
If Not c_lhWnd = 0 Then Class_Terminate
c_lhWnd = CreateWindowEx(0, PROGRESS_CLASSA, vbNullString, _
lFlag, Left, Top, Width, Heght, _
lhWndOwner, vbNull, App.hInstance, ByVal 0&)
If bMarquee Then
If c_lhWnd Then
CreateProgBar = SendMessageLong(c_lhWnd, PBM_SETMARQUEE, 1, Velocity)
End If
Else
CreateProgBar = c_lhWnd
End If
End Function
Public Property Let Value(ByVal lVal As Long)
If Not c_lhWnd = 0 Then
c_lVal = lVal
Call SendMessage(c_lhWnd, PBM_SETPOS, ByVal lVal, ByVal 0&)
End If
End Property
Public Property Get Value() As Long
Value = c_lVal
End Property
Private Sub Class_Initialize()
'
End Sub
Private Sub Class_Terminate()
If Not c_lhWnd = 0 Then
Call DestroyWindow(c_lhWnd)
c_lhWnd = 0
End If
End Sub
y lo llamamos asi
Option Explicit
Dim Progress As New cProgBar
Private Sub Form_Load()
Progress.CreateProgBar Me.hwnd, 10, 10, 200, 30, True, True, True, 0
End Sub
y lo mismo hay que compliarlo y agregar el archivo Proyecto1.exe.manifest
Saludos
hahah muy lindo =) agregate en los creditos.
Muy buen aporte Leandro, últimamente la tengo muy descuidada, pero te lo añado a la biblioteca de sources, si alguien tene por ahí algún código que se me haya pasado... :P