/// <summary>
/// A thread safe version to receive the <see cref="Control.Handle"/>
/// property of the control.
/// </summary>
/// <param name="control">The <see cref="Control"/> to retreive the handle for.</param>
/// <returns>An <see cref="IntPtr"/> with the handle of the control.</returns>
public static IntPtr GetHandle(Control control)
{
if (control.InvokeRequired)
{
var d = new GetHandleCallback(GetHandle);
return (IntPtr)control.Invoke(d, control);
}
return control.Handle;
}
/// <summary>
/// A thread safe version to receive the <see cref="Control.Handle"/>
/// property of the control.
/// </summary>
/// <param name="control">The <see cref="Control"/> to retreive the handle for.</param>
/// <returns>An <see cref="IntPtr"/> with the handle of the control.</returns>
public static IntPtr GetHandle(Control control)
{
if (control.InvokeRequired)
{
var d = new GetHandleCallback(GetHandle);
return((IntPtr)control.Invoke(d, control));
}
return(control.Handle);
}
public IntPtr GetHandle()
{
if (InvokeRequired)
{
// 解决窗体关闭时出现“访问已释放句柄”的异常
while (!IsHandleCreated)
{
if (Disposing || IsDisposed)
{
return(IntPtr.Zero);
}
}
GetHandleCallback d = new GetHandleCallback(GetHandle);
return((IntPtr)Invoke(d, null));
}
else
{
return(Handle);
}
}
