Advantech PPC-57 Series, Manual

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Appendix B Touchscreen 93
B.5 Touchscreen Driver Application
Interface (API)
The device driver supports some functions compatible with the
mouse driver, as listed below:
Compatible functions supported by the device driver
AX Description
0000h Install flag and reset
0001h Show cursor
0002h Hide cursor
0003h Get position and button status
0004h Set cursor position
0005h Get button press information
0006h Get button release information
0007h Set minimum and maximum horizontal position
0008h Set minimum and maximum vertical position
0009h Set graphics cursor block
000Ah Set text cursor
000Bh Read motion counters
000Ch Set user-defined subroutine input mask
0014h Swap user interrupt vector
Device drivers provide some functional support for application
software which sets the following touchscreen functions:
Touchscreen functions supported by device drivers
AX Description
8000h Get touchscreen device driver information
8002h Get touchscreen position and status
8003h Get touchscreen raw input
8005h Set touchscreen options
8006h Get touchscreen options table address