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DdsiTouchPanelGetDeviceCaps (Windows Embedded CE 6.0)

  • Artigo

1/6/2010

This function queries capabilities of the touch screen device.

Syntax

BOOL DdsiTouchPanelGetDeviceCaps(
  ULONG iIndex,
  LPVOID lpOutput 
);

Parameters

  • iIndex
    [in] Capability to query. The following table shows the capabilities you can specify.

    Value Description

    TPDC_SAMPLE_RATE_ID

    Returns the sample rate.

    TPDC_CALIBRATION_POINT_ID

    Returns the x and y coordinates of the required calibration point. The index of the calibration point is set in the PointNumber member of lpOutput.

    TPDC_CALIBRATION_POINT_COUNT_ID

    Returns the number of calibration points used to calibrate the touch screen.

  • lpOutput
    [out] Pointer to one or more memory locations to place the queried information. The format of the memory referenced depends on the setting of iIndex. The following table shows the iIndex values and corresponding lpOutput descriptions.

    Value Description

    TPDC_SAMPLE_RATE_ID

    Pointer to a TPDC_SAMPLE_RATE structure.

    TPDC_CALIBRATION_POINT_ID

    Pointer to a TPDC_CALIBRATION_POINT structure.

    TPDC_CALIBRATION_POINT_COUNT_ID

    Pointer to a TPDC_CALIBRATION_POINT_COUNT structure.

Return Value

TRUE if successful, FALSE otherwise.

Requirements

Header tchddsi.h
Library Tchmdd.lib
Windows Embedded CE Windows CE 1.0 and later

See Also

Reference

Touch Screen Driver DDSI Functions
TPDC_SAMPLE_RATE
TPDC_CALIBRATION_POINT
TPDC_CALIBRATION_POINT_COUNT