Dynapro Technologies Dynapro ET TCS, Application Developer'S Manual

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6-1
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This chapter describes how to create touchkeys on the Touch Control Screen (TCS). Topics
include:
•
The touch panel
•
Touch reporting
•
The commands used to create touchkeys and touch targets
For ease of reference, the commands are divided into two groups, consisting of functionally
related commands:
•
Panel Commands
•
Region Commands
Appendix A includes a sample touch panel program.
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The transparent touch panel is the key feature of the TCS that allows the user to communicate
with the host simply by touching labeled, touch-sensitive blocks on the display.
The programmer creates each touch-sensitive block and defines its function in the host program.
The user then touches the block to make a menu selection, control a process, or direct the
operation of a program.
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The touch panel consists of a thin, transparent, flexible switch matrix affixed to the front of the
TCS display. The switch matrix contains 120 individual switches called touch cells. The touch
cells are activated (closed) at the touch of a fingertip (or other soft object).
The 120 touch cells are arranged in a grid 10 columns wide by 12 rows high. Each touch cell
covers an area 8 characters wide by 2 characters high and is identified by a unique number that
the TCS can report to the host when the touch cell is touched. Touch cell numbers allow the host
to respond appropriately to touch cell reports from the TCS. Figure 6-1 shows the touch cell
number assignments.