This function queries capabilities of the touch screen device.

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 Values

TRUE if successful, FALSE otherwise.

Requirements

OS Versions: Windows CE 1.0 and later.
Header: Tchddsi.h.
Link Library: Tchmdd.lib.

See Also

>TPDC_SAMPLE_RATE | >TPDC_CALIBRATION_POINT | >TPDC_CALIBRATION_POINT_COUNT | Touch Screen Drivers

 Last updated on Tuesday, May 18, 2004

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