ValidateHObject Method - intrepidcs API
C/C++ declare - VB declare - VB.NET declare - C# declare - Parameters - Return Values - Remarks - C/C++ example - VB example - VB.NET example - C# example

This method is used to determine if a driver object is valid.

C/C++ Declare

int _stdcall icsneoValidateHObject(int hObject);

Visual Basic Declare

Public Declare Function icsneoValidateHObject Lib "icsneo40.dll" (ByVal hObject As Long) As Long

Visual Basic .NET Declare

Public Declare Function icsneoValidateHObject Lib "icsneo40.dll" (ByVal hObject As Integer) As Integer

C# Declare

[DllImport("icsneo40.dll")]
public static extern int icsneoValidateHObject(int hObject);

Parameters

hObject
    [in] Specifies the driver object created by OpenNeoDevice. 

Return Values

1 if the hObject is valid. 0 if the object is invalid.

Remarks

A driver object will be invalid if it was never initialized by OpenNeoDevice. Calling ClosePort will not invalidate a driver object; only FreeObject will do so.

Examples

Visual Basic Example

If (icsneoValidateHObject(m_hObject)) Then
    cmdCheckHardwareHandle.Caption = "Good"
Else
    cmdCheckHardwareHandle.Caption = "Lost"
End If


C/C++ Example:

if(Convert::ToBoolean(icsneoValidateHObject(m_hObject)))
{
    cmdCheckHardwareHandle->Text = "Good";
}
else
{
    cmdCheckHardwareHandle->Text = "Lost";
}


C# Example:

if (Convert.ToBoolean (icsNeoDll.icsneoValidateHObject(m_hObject)))
{
    cmdCheckHardwareHandle.Text = "Good";
}
else
{
    cmdCheckHardwareHandle.Text = "Lost";
}


Visual Basic .NET Example:
If (CBool(icsneoValidateHObject(m_hObject))) Then
    cmdCheckHardwareHandle.Text = "Good"
Else
    cmdCheckHardwareHandle.Text = "Lost"
End If

Last Updated : Thursday, December 04, 2008