X-Git-Url: https://ncurses.scripts.mit.edu/?a=blobdiff_plain;f=doc%2Fhtml%2Fman%2Fform_driver.3x.html;h=678ade6f674d14c3b9202498878f575995d1d970;hb=d1a029866f6d84087781eaa81de19949d8533426;hp=e03a6823b9beeb34678d3eef8c0184cb64eb6fd6;hpb=9f479192e3ca3413d235c66bf058f8cc63764898;p=ncurses.git diff --git a/doc/html/man/form_driver.3x.html b/doc/html/man/form_driver.3x.html index e03a6823..678ade6f 100644 --- a/doc/html/man/form_driver.3x.html +++ b/doc/html/man/form_driver.3x.html @@ -1,6 +1,7 @@
--form_driver(3X) form_driver(3X) +form_driver(3x) Library calls form_driver(3x)
- form_driver, form_driver_w - command-processing loop of the form system + form_driver, form_driver_w - command-processing loop of the form system
- #include <form.h> + #include <form.h> - int form_driver(FORM *form, int c); - int form_driver_w(FORM *form, int c, wchar_t wch); + int form_driver(FORM *form, int c); + int form_driver_w(FORM *form, int c, wchar_t wch);
Once a form has been posted (displayed), you should funnel input events - to it through form_driver. This routine has three major input cases: + to it through form_driver. This routine has three major input cases: - o The input is a form navigation request. Navigation request codes - are constants defined in <form.h>, which are distinct from the key- - and character codes returned by wgetch(3X). + o The input is a form navigation request. Navigation request codes + are constants defined in <form.h>, which are distinct from the key- + and character codes returned by wgetch(3x). - o The input is a printable character. Printable characters (which + o The input is a printable character. Printable characters (which must be positive, less than 256) are checked according to the program's locale settings. - o The input is the KEY_MOUSE special key associated with an mouse + o The input is the KEY_MOUSE special key associated with an mouse event.
This extension simplifies the use of the forms library using wide characters. The input is either a key code (a request) or a wide - character returned by get_wch(3X). The type must be passed as well, to + character returned by get_wch(3x). The type must be passed as well, to enable the library to determine whether the parameter is a wide character or a request. @@ -86,7 +87,7 @@
The form driver requests are as follows: - Name Description + Name Description --------------------------------------------------------------------- REQ_BEG_FIELD Move to the beginning of the field. REQ_BEG_LINE Move to the beginning of the line. @@ -160,19 +161,19 @@ The form driver provides low-level control over updates to the form fields. The form driver also provides for validating modified fields to ensure that the contents meet whatever constraints an application - may attach using set_field_type. + may attach using set_field_type. You can validate a field without making any changes to it using - REQ_VALIDATION. The form driver also validates a field in these cases: + REQ_VALIDATION. The form driver also validates a field in these cases: - o a call to set_current_field attempts to move to a different field. + o a call to set_current_field attempts to move to a different field. - o a call to set_current_page attempts to move to a different page of + o a call to set_current_page attempts to move to a different page of the form. - o a request attempts to move to a different field. + o a request attempts to move to a different field. - o a request attempts to move to a different page of the form. + o a request attempts to move to a different page of the form. In each case, the move fails if the field is invalid. @@ -204,68 +205,68 @@ If you click at an field inside the display area of the form: - o the form cursor is positioned to that field. + o the form cursor is positioned to that field. - o If you double-click a field, the form cursor is positioned to - that field and E_UNKNOWN_COMMAND is returned. This return value + o If you double-click a field, the form cursor is positioned to + that field and E_UNKNOWN_COMMAND is returned. This return value makes sense, because a double click usually means that an field- specific action should be returned. It is exactly the purpose of this return value to signal that an application specific command should be executed. - o If a translation into a request was done, form_driver returns + o If a translation into a request was done, form_driver returns the result of this request. If you clicked outside the user window or the mouse event could not be - translated into a form request an E_REQUEST_DENIED is returned. + translated into a form request an E_REQUEST_DENIED is returned.
If the second argument is neither printable nor one of the above pre- defined form requests, the driver assumes it is an application-specific - command and returns E_UNKNOWN_COMMAND. Application-defined commands - should be defined relative to MAX_COMMAND, the maximum value of these + command and returns E_UNKNOWN_COMMAND. Application-defined commands + should be defined relative to MAX_COMMAND, the maximum value of these pre-defined requests.
- form_driver returns one of the following error codes: + form_driver returns one of the following error codes: - E_OK The routine succeeded. + E_OK The routine succeeded. - E_BAD_ARGUMENT + E_BAD_ARGUMENT Routine detected an incorrect or out-of-range argument. - E_BAD_STATE + E_BAD_STATE Routine was called from an initialization or termination function. - E_NOT_POSTED + E_NOT_POSTED The form has not been posted. - E_INVALID_FIELD + E_INVALID_FIELD Contents of field is invalid. - E_NOT_CONNECTED + E_NOT_CONNECTED No fields are connected to the form. - E_REQUEST_DENIED + E_REQUEST_DENIED The form driver could not process the request. - E_SYSTEM_ERROR - System error occurred (see errno(3)). + E_SYSTEM_ERROR + System error occurred (see errno(3)). - E_UNKNOWN_COMMAND + E_UNKNOWN_COMMAND The form driver code saw an unknown request code.
- curses(3X), form(3X), form_fieldtype(3X), form_field_buffer(3X), - form_field_validation(3X), form_variables(3X), getch(3X). + curses(3x), form(3x), form_fieldtype(3x), form_field_buffer(3x), + form_field_validation(3x), form_variables(3x), getch(3x).
- The header file <form.h> automatically includes the header files - <curses.h>. + The header file <form.h> automatically includes the header files + <curses.h>.
@@ -279,7 +280,7 @@ - form_driver(3X) +ncurses 6.4 2023-08-05 form_driver(3x)