Unit Touch

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Description


To be documented

Constants


To be documented

Type definitions


To be documented

Public variables


To be documented

Function declarations



Initialization functions

procedure TouchInit;
Description: Initialize the Touch unit and Touch device table
Note Called only during system startup


Touch functions

function TouchDeviceStart(Touch:PTouchDevice):LongWord;
Description: Start the specified Touch device ready for receiving events
Touch The Touch device to start
Return ERROR_SUCCESS if completed or another error code on failure


function TouchDeviceStop(Touch:PTouchDevice):LongWord;
Description: Stop the specified Touch device and terminate receiving events
Touch The Touch device to stop
Return ERROR_SUCCESS if completed or another error code on failure


function TouchDevicePeek(Touch:PTouchDevice):LongWord;
Description: Peek at the buffer of the specified touch device to see if any data packets are ready
Touch The Touch device to peek at
Return ERROR_SUCCESS if packets are ready, ERROR_NO_MORE_ITEMS if not or another error code on failure


function TouchDeviceRead(Touch:PTouchDevice; Buffer:Pointer; Size,Flags:LongWord; var Count:LongWord):LongWord;
Description: Read touch data packets from the buffer of the specified touch device
Touch The Touch device to read from
Buffer Pointer to a buffer to copy the touch data packets to
Size The size of the buffer in bytes (Must be at least TTouchData or greater)
Flags The flags for the behaviour of the read (eg TOUCH_FLAG_NON_BLOCK)
Count The number of touch data packets copied to the buffer
Return ERROR_SUCCESS if completed or another error code on failure


function TouchDeviceWrite(Touch:PTouchDevice; Buffer:Pointer; Size,Count:LongWord):LongWord;
Description: Write touch data packets to the buffer of the specified touch device
Touch The Touch device to write to
Buffer Pointer to a buffer to copy the touch data packets from
Size The size of the buffer in bytes (Must be at least TTouchData or greater)
Count The number of touch data packets to copy from the buffer
Return ERROR_SUCCESS if completed or another error code on failure


function TouchDeviceFlush(Touch:PTouchDevice):LongWord;
Description: Flush the contents of the buffer of the specified touch device
Touch The Touch device to flush
Return ERROR_SUCCESS if completed or another error code on failure


function TouchDeviceControl(Touch:PTouchDevice; Request:Integer; Argument1:LongWord; var Argument2:LongWord):LongWord;
Description: Perform a control request on the specified touch device
Touch The Touch device to control
Request The request code for the operation (eg TOUCH_CONTROL_GET_FLAG)
Argument1 The first argument for the operation (Dependent on request code)
Argument2 The second argument for the operation (Dependent on request code)
Return ERROR_SUCCESS if completed or another error code on failure


function TouchDeviceProperties(Touch:PTouchDevice; Properties:PTouchProperties):LongWord;
Description: Get the properties for the specified Touch device
Touch The Touch device to get properties from
Properties Pointer to a TTouchProperties structure to fill in
Return ERROR_SUCCESS if completed or another error code on failure


function TouchDeviceCreate:PTouchDevice;
Description: Create a new Touch device entry
Return Pointer to new Touch device entry or nil if Touch device could not be created


function TouchDeviceCreateEx(Size:LongWord):PTouchDevice;
Description: Create a new Touch device entry
Size Size in bytes to allocate for new Touch device (Including the Touch device entry)
Return Pointer to new Touch device entry or nil if Touch device could not be created


function TouchDeviceDestroy(Touch:PTouchDevice):LongWord;
Description: Destroy an existing Touch device entry
Note None documented


function TouchDeviceRegister(Touch:PTouchDevice):LongWord;
Description: Register a new Touch device in the Touch device table
Note None documented


function TouchDeviceDeregister(Touch:PTouchDevice):LongWord;
Description: Deregister an Touch device from the Touch device table
Note None documented


function TouchDeviceFind(TouchId:LongWord):PTouchDevice;
Description: To be documented
Note None documented


function TouchDeviceFindByName(const Name:String):PTouchDevice; inline;
Description: To be documented
Note None documented


function TouchDeviceFindByDescription(const Description:String):PTouchDevice; inline;
Description: To be documented
Note None documented


function TouchDeviceEnumerate(Callback:TTouchEnumerate; Data:Pointer):LongWord;
Description: To be documented
Note None documented


function TouchDeviceNotification(Touch:PTouchDevice; Callback:TTouchNotification; Data:Pointer; Notification,Flags:LongWord):LongWord;
Description: To be documented
Note None documented


Touch helper functions

function TouchGetCount:LongWord; inline;
Description: Get the current Touch device count
Note None documented


function TouchDeviceGetDefault:PTouchDevice; inline;
Description: Get the current default Touch device
Note None documented


function TouchDeviceSetDefault(Touch:PTouchDevice):LongWord;
Description: Set the current default Touch device
Note None documented


function TouchDeviceCheck(Touch:PTouchDevice):PTouchDevice;
Description: Check if the supplied Touch device is in the Touch device table
Note None documented


procedure TouchLog(Level:LongWord; Touch:PTouchDevice; const AText:String);
Description: To be documented
Note None documented


procedure TouchLogInfo(Touch:PTouchDevice; const AText:String); inline;
Description: To be documented
Note None documented


procedure TouchLogError(Touch:PTouchDevice; const AText:String); inline;
Description: To be documented
Note None documented


procedure TouchLogDebug(Touch:PTouchDevice; const AText:String); inline;
Description: To be documented
Note None documented


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