X-Git-Url: https://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=doc%2Fhtml%2Fman%2Fform_driver.3x.html;h=38e9603ca4fa114850a75789a3af61676ed1f165;hp=a029ea21c6ffd83799256a741ce7fc1ee58f12f4;hb=HEAD;hpb=6208c89f98f1cf9fe0980bd8e791846ce007a13d diff --git a/doc/html/man/form_driver.3x.html b/doc/html/man/form_driver.3x.html index a029ea21..859c291a 100644 --- a/doc/html/man/form_driver.3x.html +++ b/doc/html/man/form_driver.3x.html @@ -1,6 +1,8 @@ -
- --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> + int form_driver(FORM *form, int c); - int form_driver_w(FORM *form, int c, wchar_t wch); + int form_driver_w(FORM *form, int c, wchar_t wc);
- Once a form has been posted (displayed), you should funnel - input events to it through form_driver. This routine has - three major input cases: + 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 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 charac- - ters (which must be positive, less than 256) are - checked according to the program's locale settings. + 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 event. + 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 enable the library to - determine whether the parameter is a wide character or a - request. + 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 + enable the library to determine whether the parameter is a wide + character or a request. -
+
The form driver requests are as follows: - Name Description - ------------------------------------------------------------------------- - 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. - - -
- 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 decora- - tion window) are handled. + Name Description + ------------------------------------------------------------------------ + REQ_BEG_FIELD Move to beginning of field. + REQ_BEG_LINE Move to 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 cursor. + REQ_DOWN_CHAR Move down in field. + REQ_DOWN_FIELD Move down to a field. + REQ_END_FIELD Move to the end of 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 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 field. + REQ_RIGHT_FIELD Move right to a field. + REQ_SCR_BCHAR Scroll field backward 1 character. + REQ_SCR_BHPAGE Scroll field backward 1/2 page. + REQ_SCR_BLINE Scroll field backward 1 line. + REQ_SCR_BPAGE Scroll field backward 1 page. + REQ_SCR_FCHAR Scroll field forward 1 character. + REQ_SCR_FHPAGE Scroll field forward 1/2 page. + REQ_SCR_FLINE Scroll field forward 1 line. + REQ_SCR_FPAGE Scroll field forward 1 page. + REQ_SCR_HBHALF Horizontal scroll field backward 1/2 line. + REQ_SCR_HBLINE Horizontal scroll field backward 1 line. + REQ_SCR_HFHALF Horizontal scroll field forward 1/2 line. + REQ_SCR_HFLINE Horizontal scroll field forward 1 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 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: @@ -179,34 +203,30 @@ a REQ_LAST_FIELD is generated for a triple-click. - If you click at an field inside the display area of the - form: + If you click at an field inside the display area of the form: 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 makes sense, because a - double click usually means that an field-specific - action should be returned. It is exactly the pur- - pose of this return value to signal that an appli- - cation specific command should be executed. + 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 the result of this request. + 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. + 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. -
- 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_COM- - MAND. Application-defined commands should be defined rel- - ative to MAX_COMMAND, the maximum value of these pre- - defined requests. +
+ 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.
@@ -215,12 +235,10 @@ E_OK The routine succeeded. 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. @@ -228,37 +246,36 @@ 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). + System error occurred (see errno(3)). E_UNKNOWN_COMMAND The form driver code saw an unknown request code. -
- curses(3x), form(3x), form_variables(3x), curs_getch(3x). - - -
- The header file <form.h> automatically includes the header - files <curses.h>. - -
- These routines emulate the System V forms library. They - were not supported on Version 7 or BSD versions. + These routines emulate the System V forms library. They were not + supported on Version 7 or BSD versions.
- Juergen Pfeifer. Manual pages and adaptation for new - curses by Eric S. Raymond. + Juergen Pfeifer. Manual pages and adaptation for new curses by Eric S. + Raymond. + + +
+ curses(3x), form(3x), form_fieldtype(3x), form_field_buffer(3x), + form_field_validation(3x), form_variables(3x), getch(3x) - form_driver(3x) +ncurses 6.5 2024-04-20 form_driver(3x)