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ITPhone::get_ButtonState method (tapi3if.h)

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The get_ButtonState method retrieves the button state associated with a particular button.

The application must call the ITPhone::Open method before invoking this method; otherwise, the invocation fails.

Syntax

HRESULT get_ButtonState(
  [in]  long               lButtonID,
  [out] PHONE_BUTTON_STATE *pButtonState
);

Parameters

[in] lButtonID

Button identifier.

[out] pButtonState

The PHONE_BUTTON_STATE descriptor for the button's state.

Return value

If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.

Requirements

Requirement Value
Target Platform Windows
Header tapi3if.h (include Tapi3.h)
Library Uuid.lib
DLL Tapi3.dll

See also

ITPhone

ITPhoneEvent::get_ButtonState