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SipShowIM (coredll)

coredll is for smart devices, not desktop Windows. Therefore, this information only applies to code using the .NET Compact Framework. To see if information for SipShowIM in other DLLs exists, click on Find References to the right.

This function shows or hides the currently active input panel window. An application must call this function to display the input panel and its current input method (taken from

C# Signature:

[DllImport("coredll.dll", SetLastError=true)]
    extern static int SipShowIM(int dwFlag);

VB Signature:

Declare Function SipShowIM Lib "coredll.dll" (ByVal dwFlag As Short) As Short

User-Defined Types:


Alternative Managed API:

There's the InputPanel control.



private void ShowSIP (bool showIt)


    inputPanel.Enabled = showIt;


private void ToggleSIP ()


    inputPanel.Enabled = !inputPanel.Enabled;



Main benefit of using this over the InputPanel is that there is no control to instantiate in the form initialization process. The main drawback is that you do not have access to the InputPanel.Bounds property. C++ TRUE indicates success. When this function fails, it returns an HRESULT error code.

Tips & Tricks:

Please add some!

Sample Code:

const int SIPF_ON = 1;

const int SIPF_OFF = 0;

public int ShowSIP(Boolean ShowIt)


    SipShowIM( ShowIt ? SIPF_ON : SIPF_OFF);


SipShowIM on MSDN

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