C#

Luc Pattyn wrote:

I consider it bad practice to change the behavior of a standard Control

protected override void OnClick(EventArgs e)    <br />
{       <br />
        if(this.BeforeStateChange != null)<br />
        {<br />
            this.BeforeStateChange(this, ref cancelStateChg);<br />
        }<br />
        if(this.cancelStateChg)<br />
        {           <br />
            this.Checked = !this.Checked;<br />
        }       <br />
        base.OnClick (e);<br />
}<br />

fracalifa wrote per e-mail:

Hi Martin,
tnx, that works, but how can I prevent the statechange of the radiobutton ? Is there a cancel option which I can use for?
Tnx Frank [confused]

private bool _disable = false;
public bool Disable
{
    get
    {
        return _disable;
    }
    set
    {
        if(value!=_disable)
        {
            _disable = value;
        }
    }
}

protected override void OnClick(EventArgs e)
{
    if(!Disable)
        base.OnClick (e);
}

private delegate void EnableTimerDelegate();
private void EnableTimer()
{
	if(InvokeRequired)
	{
		Invoke(new EnableTimerDelegate(EnableTimer), new object[] {});
		return;
	}
	if(!stepTimer.Enabled)
	{
		stepTimer.Enabled = true;
	}
}

alashara wrote:

Thank you very much it works.

[System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)]
    public struct SystemTime
{
    public short sYear;
    public short sMonth;
    public short sDayOfWeek;
    public short sDay;
    public short sHour;
    public short sMinute;
    public short sSecond;
    public short sMilliSeconds;
}

[System.Runtime.InteropServices.DllImport("kernel32.dll")]
public static extern bool SetLocalTime(ref SystemTime time);

[System.Runtime.InteropServices.DllImport("kernel32.dll")]
public static extern bool GetLocalTime(ref SystemTime time);

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
    public struct TimeZoneInformation
{
    public int bias;

    [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)]
    public string standardName;

    SystemTime standardDate;

    public int standardBias;

    [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)]
    public string daylightName;

    SystemTime daylightDate;

    public int daylightBias;
}

[DllImport("kernel32.dll", CharSet = CharSet.Auto)]
private static extern bool SetTimeZoneInformation([In] ref TimeZoneInformation lpTimeZoneInformation);

[DllImport("kernel32.dll", CharSet = CharSet.Auto)]
private static extern int GetTimeZoneInformation(out TimeZoneInformation lpTimeZoneInformation);