#include<form.h>
- int form_driver(FORM *form, int c);
-
-
-
-
DESCRIPTION
- Once a form has been posted (displayed), you should funnel
- input events to it through form_driver. This routine has
- two major input cases; either the input is a form naviga-
- tion request or it's a printable ASCII character. The
- form driver requests are as follows:
-
- REQ_NEXT_PAGE
- Move to the next page.
-
- REQ_PREV_PAGE
- Move to the previous page.
-
- REQ_FIRST_PAGE
- Move to the first page.
-
- REQ_LAST_PAGE
- Move to the last field.
-
-
- REQ_NEXT_FIELD
- Move to the next field.
-
- REQ_PREV_FIELD
- Move to the previous field.
-
- REQ_FIRST_FIELD
- Move to the first field.
-
- REQ_LAST_FIELD
- Move to the last field.
-
- REQ_SNEXT_FIELD
- Move to the sorted next field.
-
- REQ_SPREV_FIELD
- Move to the sorted previous field.
-
- REQ_SFIRST_FIELD
- Move to the sorted first field.
-
- REQ_SLAST_FIELD
- Move to the sorted last field.
-
- REQ_LEFT_FIELD
- Move left to a field.
-
- REQ_RIGHT_FIELD
- Move right to a field.
-
- REQ_UP_FIELD
- Move up to a field.
-
- REQ_DOWN_FIELD
- Move down to a field.
-
-
- REQ_NEXT_CHAR
- Move to the next char.
-
- REQ_PREV_CHAR
- Move to the previous char.
-
- REQ_NEXT_LINE
- Move to the next line.
-
- REQ_PREV_LINE
- Move to the previous line.
-
- REQ_NEXT_WORD
- Move to the next word.
-
- REQ_PREV_WORD
- Move to the previous word.
-
- REQ_BEG_FIELD
- Move to the beginning of the field.
-
- REQ_END_FIELD
- Move to the end of the field.
-
- REQ_BEG_LINE
- Move to the beginning of the line.
-
- REQ_END_LINE
- Move to the end of the line.
-
- REQ_LEFT_CHAR
- Move left in the field.
-
- REQ_RIGHT_CHAR
- Move right in the field.
-
- REQ_UP_CHAR
- Move up in the field.
-
- REQ_DOWN_CHAR
- Move down in the field.
-
-
- REQ_NEW_LINE
- Insert or overlay a new line.
-
- REQ_INS_CHAR
- Insert a blank at the cursor.
+ intform_driver(FORM*form,intc);
+ intform_driver_w(FORM*form,intc,wchar_twch);
+
+
+
+ Once a form has been posted (displayed), you should funnel input events
+ 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 printable character. Printable characters (which
+ must be positive, less than 256) are checked according to the pro-
+ gram's locale settings.
+
+ 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 char-
+ acters. 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 enable
+ the library to determine whether the parameter is a wide character or a
+ request.
+
+
+
+ The form driver requests are as follows:
+
+ NameDescription
+ ---------------------------------------------------------------------
+ REQ_BEG_FIELD Move to the beginning of the field.
+ REQ_BEG_LINE Move to the beginning of the line.
+ REQ_CLR_EOF Clear to end of field from cursor.
+ REQ_CLR_EOL Clear to end of line from cursor.
+ REQ_CLR_FIELD Clear the entire field.
+ REQ_DEL_CHAR Delete character at the cursor.
+ REQ_DEL_LINE Delete line at the cursor.
+ REQ_DEL_PREV Delete character before the cursor.
+ REQ_DEL_WORD Delete blank-delimited word at the cursor.
+ REQ_DOWN_CHAR Move down in the field.
+ REQ_DOWN_FIELD Move down to a field.
+ REQ_END_FIELD Move to the end of the field.
+ REQ_END_LINE Move to the end of the line.
+ REQ_FIRST_FIELD Move to the first field.
+ REQ_FIRST_PAGE Move to the first page.
+ REQ_INS_CHAR Insert a blank at the cursor.
+ REQ_INS_LINE Insert a blank line at the cursor.
+ REQ_INS_MODE Enter insert mode.
+ REQ_LAST_FIELD Move to the last field.
+ REQ_LAST_PAGE Move to the last field.
+ REQ_LEFT_CHAR Move left in the field.
+ REQ_LEFT_FIELD Move left to a field.
+ REQ_NEW_LINE Insert or overlay a new line.
+ REQ_NEXT_CHAR Move to the next char.
+ REQ_NEXT_CHOICE Display next field choice.
+
+ REQ_NEXT_FIELD Move to the next field.
+ REQ_NEXT_LINE Move to the next line.
+ REQ_NEXT_PAGE Move to the next page.
+ REQ_NEXT_PAGE Move to the next page.
+ REQ_NEXT_WORD Move to the next word.
+ REQ_OVL_MODE Enter overlay mode.
+ REQ_PREV_CHAR Move to the previous char.
+ REQ_PREV_CHOICE Display previous field choice.
+ REQ_PREV_FIELD Move to the previous field.
+ REQ_PREV_LINE Move to the previous line.
+ REQ_PREV_PAGE Move to the previous page.
+ REQ_PREV_WORD Move to the previous word.
+ REQ_RIGHT_CHAR Move right in the field.
+ REQ_RIGHT_FIELD Move right to a field.
+ REQ_SCR_BCHAR Scroll the field backward a character.
+ REQ_SCR_BHPAGE Scroll the field backward half a page.
+ REQ_SCR_BLINE Scroll the field backward a line.
+ REQ_SCR_BPAGE Scroll the field backward a page.
+ REQ_SCR_FCHAR Scroll the field forward a character.
+ REQ_SCR_FHPAGE Scroll the field forward half a page.
+ REQ_SCR_FLINE Scroll the field forward a line.
+ REQ_SCR_FPAGE Scroll the field forward a page.
+ REQ_SCR_HBHALF Horizontal scroll the field backward half a line.
+ REQ_SCR_HBLINE Horizontal scroll the field backward a line.
+ REQ_SCR_HFHALF Horizontal scroll the field forward half a line.
+ REQ_SCR_HFLINE Horizontal scroll the field forward a line.
+ REQ_SFIRST_FIELD Move to the sorted first field.
+ REQ_SLAST_FIELD Move to the sorted last field.
+ REQ_SNEXT_FIELD Move to the sorted next field.
+ REQ_SPREV_FIELD Move to the sorted previous field.
+ REQ_UP_CHAR Move up in the field.
+ REQ_UP_FIELD Move up to a field.
+ REQ_VALIDATION Validate field.
+
+ If the second argument is a printable character, the driver places it
+ in the current position in the current field. If it is one of the
+ forms requests listed above, that request is executed.
+
+
+
+ The form library makes updates to the window associated with form
+ fields rather than directly to the field buffers.
+
+ 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.
+
+ You can validate a field without making any changes to it using
+ 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_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 page of the form.
+
+ In each case, the move fails if the field is invalid.
+
+ If the modified field is valid, the form driver copies the modified
+ data from the window associated with the field to the field buffer.
+
+
+
+ If the second argument is the KEY_MOUSE special key, the associated
+ mouse event is translated into one of the above pre-defined requests.
+ Currently only clicks in the user window (e.g., inside the form display
+ area or the decoration window) are handled.
+
+ If you click above the display region of the form:
+
+ a REQ_PREV_FIELD is generated for a single click,
+
+ a REQ_PREV_PAGE is generated for a double-click and
+
+ a REQ_FIRST_FIELD is generated for a triple-click.
+
+ If you click below the display region of the form:
+
+ a REQ_NEXT_FIELD is generated for a single click,
+
+ a REQ_NEXT_PAGE is generated for a double-click and
+
+ a REQ_LAST_FIELD is generated for a triple-click.
- REQ_INS_LINE
- Insert a blank line at the cursor.
+ If you click at an field inside the display area of the form:
- REQ_DEL_CHAR
- Delete character at the cursor.
+ o the form cursor is positioned to that field.
- REQ_DEL_PREV
- Delete character before the cursor.
+ 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 com-
+ mand should be executed.
- REQ_DEL_LINE
- Delete line at the cursor.
+ o If a translation into a request was done, form_driver returns
+ the result of this request.
- REQ_DEL_WORD
- Delete blank-delimited word at the cursor.
+ 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.
- REQ_CLR_EOL
- Clear to end of line from cursor.
- REQ_CLR_EOF
- Clear to end of field from cursor.
+
+ 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
+ pre-defined requests.
- REQ_CLR_FIELD
- Clear the entire field.
- REQ_OVL_MODE
- Enter overlay mode.
-
- REQ_INS_MODE
- Enter insert mode.
-
-
- REQ_SCR_FLINE
- Scroll the field forward a line.
-
- REQ_SCR_BLINE
- Scroll the field backward a line.
-
- REQ_SCR_FPAGE
- Scroll the field forward a page.
-
- REQ_SCR_BPAGE
- Scroll the field backward a page.
-
- REQ_SCR_FHPAGE
- Scroll the field forward half a page.
-
- REQ_SCR_BHPAGE
- Scroll the field backward half a page.
-
-
- REQ_SCR_FCHAR
- Scroll the field forward a character.
-
- REQ_SCR_BCHAR
- Scroll the field backward a character.
-
- REQ_SCR_HFLINE
- Horizontal scroll the field forward a line.
-
- REQ_SCR_HBLINE
- Horizontal scroll the field backward a line.
-
- REQ_SCR_HFHALF
- Horizontal scroll the field forward half a line.
-
- REQ_SCR_HBHALF
- Horizontal scroll the field backward half a line.
-
-
- REQ_VALIDATION
- Validate field.
-
- REQ_NEXT_CHOICE
- Display next field choice.
-
- REQ_PREV_CHOICE
- Display previous field choice.
-
- If the second argument is a printable ASCII character, the
- driver places it in the current position in the current
- field. If it is one of the forms requests listed above,
- that request is executed.
-
- If the second argument is neither printable ASCII 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 pre-defined requests.
-
-
-
-
RETURN VALUE
- form_driver return one of the following error codes:
+
+ form_driver returns one of the following error codes:
E_OK The routine succeeded.
- E_SYSTEM_ERROR
- System error occurred (see errno).
-
E_BAD_ARGUMENT
- Routine detected an incorrect or out-of-range argu-
- ment.
+ Routine detected an incorrect or out-of-range argument.
E_BAD_STATE
- Routine was called from an initialization or termina-
- tion function.
+ Routine was called from an initialization or termination function.
E_NOT_POSTED
The form has not been posted.
- E_UNKNOWN_COMMAND
- The form driver code saw an unknown request code.
-
E_INVALID_FIELD
Contents of field is invalid.
+ E_NOT_CONNECTED
+ No fields are connected to the form.
+
E_REQUEST_DENIED
The form driver could not process the request.
+ E_SYSTEM_ERROR
+ System error occurred (see errno(3)).
-
-
SEE ALSO
- curses(3x), form(3x).
+ E_UNKNOWN_COMMAND
+ The form driver code saw an unknown request code.
-
-
NOTES
- The header file <form.h> automatically includes the header
- files <curses.h>.
+