Nicola Pievani
120 lines
3.9 KiB
VB.net
120 lines
3.9 KiB
VB.net
'/******************************************************************************
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'* *
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'* PROJECT : EOS Digital Software Development Kit EDSDK *
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'* NAME : GetPropertyDescCommand.vb *
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'* *
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'* Description: This is the Sample code to show the usage of EDSDK. *
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'* *
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'* *
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'*******************************************************************************
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'* *
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'* Written and developed by Camera Design Dept.53 *
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'* Copyright Canon Inc. 2006 All Rights Reserved *
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'* *
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'*******************************************************************************
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'* File Update Information: *
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'* DATE Identify Comment *
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'* ----------------------------------------------------------------------- *
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'* 06-03-22 F-001 create first version. *
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'* *
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'******************************************************************************/
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Option Explicit On
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Imports System.Runtime.InteropServices
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Public Class GetPropertyDescCommand
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Inherits Command
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Private propertyID As Integer
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Public Sub New(ByVal model As CameraModel, ByVal propertyID As Integer)
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MyBase.new(model)
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Me.propertyID = propertyID
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End Sub
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'// Execute a command.
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Overrides Function execute() As Boolean
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Dim err As Integer = EDS_ERR_OK
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'//Get an available property list.
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err = getPropertyDesc(Me.propertyID)
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'// Notify Error.
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If err <> EDS_ERR_OK Then
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'// Retry when the camera replys deviceBusy.
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If (err & EDS_ERRORID_MASK) = EDS_ERR_DEVICE_BUSY Then
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MyBase.model.notifyObservers(warn, err)
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Return False
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End If
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MyBase.model.notifyObservers(errr, err)
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End If
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Return True
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End Function
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Private Function getPropertyDesc(ByVal id As Integer) As Integer
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Dim err As Integer = EDS_ERR_OK
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Dim propertyDesc As New EdsPropertyDesc
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If id = kEdsPropID_Unknown Then
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'// If the propertyID is invalidID,
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'// you should retry to get available property lists.
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'// InvalidID is able to be published for the models elder than EOS30D.
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If err = EDS_ERR_OK Then
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err = getPropertyDesc(kEdsPropID_AEMode)
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End If
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If err = EDS_ERR_OK Then
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err = getPropertyDesc(kEdsPropID_Tv)
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End If
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If err = EDS_ERR_OK Then
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err = getPropertyDesc(kEdsPropID_Av)
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End If
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If err = EDS_ERR_OK Then
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err = getPropertyDesc(kEdsPropID_ISOSpeed)
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End If
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Return err
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End If
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'// Get available property lists.
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If err = EDS_ERR_OK Then
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err = EdsGetPropertyDesc(MyBase.model.getCameraObject(), _
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id, _
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propertyDesc)
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End If
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'// Stock the available property list.
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If err = EDS_ERR_OK Then
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MyBase.model.setPropertyDesc(id, propertyDesc)
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End If
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'// Notify updating.
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If err = EDS_ERR_OK Then
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MyBase.model.notifyObservers(upls, id)
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End If
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Return err
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End Function
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End Class
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