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发表于 2010-7-30 12:47:00
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class AutoCADConnector: IDisposable
{
public AcadApplication _application;
private bool _initialized;
private bool _disposed;
public AutoCADConnector()
{
try
{
// Upon creation, attempt to retrieve running instance
_application = (AcadApplication)Marshal.GetActiveObject("AutoCAD.Application.16");
}
catch
{
try
{
// Create an instance and set flag to indicate this
_application = new AcadApplicationClass();
_initialized = true;
}
catch
{
throw;
}
}
}
// If the user doesn't call Dispose, the
// garbage collector will upon destruction
~AutoCADConnector()
{
Dispose(false);
}
public AcadApplication Application
{
get
{
// Return our internal instance of AutoCAD
return _application;
}
}
// This is the user-callable version of Dispose.
// It calls our internal version and removes the
// object from the garbage collector's queue.
public void Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
// This version of Dispose gets called by our
// destructor.
protected virtual void Dispose(bool disposing)
{
// If we created our AutoCAD instance, call its
// Quit method to avoid leaking memory.
if (!this._disposed && _initialized)
{
try
{
if (Marshal.GetActiveObject("AutoCAD.Application.16").Equals(this._application))
{
_application.Quit();
}
}
catch
{
}
}
_disposed = true;
}
} |
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