Z-World eDisplay OP7200, Руководство пользователя

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User’s Manual 61
Displays a menu on the LCD display and get the menu options from the user.
NOTE: This function will display an error message on the LCD if the menu width or
height exceeds the LCD display boundaries.
PARAMETERS
mPtr
is a pointer to structure that contains the information for the menu
state is a pointer to the menu control parameter. The state parameters are as follows:
0 = MENU_INIT , initialize and display menu
1 = MENU_NO_CHANGE , return to selected option, no changes to menu or highlightbar.
2 = MENU_REFRESH , display the last image of the menu, including the location of the highlight
bar.
x is the x coordinate of where the text menu is to start
y is the y coordinate of where the text menu is to start
RETRUN VALUE
0 = no option is selected
>0 = option the user has selected
-1 = menu has exceeded LCD screen width
-2 = menu has exceeded LCD screen height
SEE ALSO
glMenuInit, glMenuClear, glRefreshMenu
Refreshes the menu indicated by the WindowMenu pointer.
PARAMETER
mPtr is a windowMenu descriptor pointer
RETURN VALUE
None.
SEE ALSO
glMenuInit, glMenu, glMenuClear
int glMenu(windowMenu *mPtr, int *state, int x,
int y);
void glRefreshMenu(windowMenu *mPtr);