RabbitCore eDisplay OP7200, Руководство пользователя

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User’s Manual 107
Searches the list of buttons in use for a button that matches the x,y coordinates from the touchscreen.
PARAMETERS
xmemPtr is the xmem address of the pointer to an array of button descriptors
btn is the button ID code of the button to be verified
x is the x coordinate of the location on the touchscreen
y is the y coordinate of the location on the touchscreen
RETURN VALUE
The button ID of the button corresponding to the button being verified. If the button is not the correct
button, the function returns a negative number.
SEE ALSO
btnSearchXY, btnGet
Checks the touchscreen x,y coordinates against a given set of buttons being displayed to look for a match.
If a match is found, then the button ID code for the button will be returned.
PARAMETERS
xmemPtr is the xmem address of the pointer to an array of button descriptors
RETURN VALUE
The button ID code of the button corresponding to the button being pressed. If no such button is found,
the function returns a negative number.
SEE ALSO
btnSearchXY, btnVerifyXY
int btnVerifyXY(unsigned long xmemPtr, int btn,
int x, int y);
int btnGet(unsigned long xmemPtr);