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- * @Id: form_driver.3x,v 1.35 2020/12/19 21:34:15 tom Exp @
+ * @Id: form_driver.3x,v 1.61 2024/04/20 18:55:09 tom Exp @
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-<H1 class="no-header">form_driver 3X</H1>
+<H1 class="no-header">form_driver 3x 2024-04-20 ncurses 6.4 Library calls</H1>
<PRE>
-<B><A HREF="form_driver.3X.html">form_driver(3X)</A></B> <B><A HREF="form_driver.3X.html">form_driver(3X)</A></B>
+<STRONG><A HREF="form_driver.3x.html">form_driver(3x)</A></STRONG> Library calls <STRONG><A HREF="form_driver.3x.html">form_driver(3x)</A></STRONG>
</PRE><H2><a name="h2-NAME">NAME</a></H2><PRE>
- <B>form_driver</B>, <B>form_driver_w</B> - command-processing loop of the form system
+ <STRONG>form_driver</STRONG>, <STRONG>form_driver_w</STRONG> - command-processing loop of the form system
</PRE><H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
- <B>#include</B> <B><form.h></B>
+ <STRONG>#include</STRONG> <STRONG><form.h></STRONG>
- <B>int</B> <B>form_driver(FORM</B> <B>*</B><I>form</I><B>,</B> <B>int</B> <I>c</I><B>);</B>
- <B>int</B> <B>form_driver_w(FORM</B> <B>*</B><I>form</I><B>,</B> <B>int</B> <I>c</I><B>,</B> <B>wchar_t</B> <I>wch</I><B>);</B>
+ <STRONG>int</STRONG> <STRONG>form_driver(FORM</STRONG> <STRONG>*</STRONG><EM>form</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>c</EM><STRONG>);</STRONG>
+ <STRONG>int</STRONG> <STRONG>form_driver_w(FORM</STRONG> <STRONG>*</STRONG><EM>form</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>c</EM><STRONG>,</STRONG> <STRONG>wchar_t</STRONG> <EM>wc</EM><STRONG>);</STRONG>
</PRE><H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
</PRE><H3><a name="h3-form_driver">form_driver</a></H3><PRE>
Once a form has been posted (displayed), you should funnel input events
- to it through <B>form_driver</B>. This routine has three major input cases:
+ to it through <STRONG>form_driver</STRONG>. This routine has three major input cases:
- <B>o</B> The input is a form navigation request. Navigation request codes
- are constants defined in <B><form.h></B>, which are distinct from the key-
- and character codes returned by <B><A HREF="curs_getch.3X.html">wgetch(3X)</A></B>.
+ <STRONG>o</STRONG> The input is a form navigation request. Navigation request codes
+ are constants defined in <STRONG><form.h></STRONG>, which are distinct from the key-
+ and character codes returned by <STRONG><A HREF="curs_getch.3x.html">wgetch(3x)</A></STRONG>.
- <B>o</B> The input is a printable character. Printable characters (which
+ <STRONG>o</STRONG> The input is a printable character. Printable characters (which
must be positive, less than 256) are checked according to the
program's locale settings.
- <B>o</B> The input is the KEY_MOUSE special key associated with an mouse
+ <STRONG>o</STRONG> The input is the KEY_MOUSE special key associated with an mouse
event.
</PRE><H3><a name="h3-form_driver_w">form_driver_w</a></H3><PRE>
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 <B><A HREF="curs_get_wch.3X.html">get_wch(3X)</A></B>. The type must be passed as well, to
+ character returned by <STRONG><A HREF="curs_get_wch.3x.html">get_wch(3x)</A></STRONG>. The type must be passed as well, to
enable the library to determine whether the parameter is a wide
character or a request.
-</PRE><H3><a name="h3-Form-
driver-requests">Form-driver requests</a></H3><PRE>
+</PRE><H3><a name="h3-Form-
Driver-Requests">Form Driver Requests</a></H3><PRE>
The form driver requests are as follows:
- <I>Name</I> <I>Description</I>
- ---------------------------------------------------------------------
- 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.
+ <STRONG>Name</STRONG> <STRONG>Description</STRONG>
+ ------------------------------------------------------------------------
+ <STRONG>REQ_BEG_FIELD</STRONG> Move to beginning of field.
+ <STRONG>REQ_BEG_LINE</STRONG> Move to beginning of the line.
+ <STRONG>REQ_CLR_EOF</STRONG> Clear to end of field from cursor.
+ <STRONG>REQ_CLR_EOL</STRONG> Clear to end of line from cursor.
+ <STRONG>REQ_CLR_FIELD</STRONG> Clear the entire field.
+ <STRONG>REQ_DEL_CHAR</STRONG> Delete character at the cursor.
+ <STRONG>REQ_DEL_LINE</STRONG> Delete line at the cursor.
+ <STRONG>REQ_DEL_PREV</STRONG> Delete character before the cursor.
+ <STRONG>REQ_DEL_WORD</STRONG> Delete blank-delimited word at cursor.
+ <STRONG>REQ_DOWN_CHAR</STRONG> Move down in field.
+ <STRONG>REQ_DOWN_FIELD</STRONG> Move down to a field.
+ <STRONG>REQ_END_FIELD</STRONG> Move to the end of field.
+ <STRONG>REQ_END_LINE</STRONG> Move to the end of the line.
+ <STRONG>REQ_FIRST_FIELD</STRONG> Move to the first field.
+ <STRONG>REQ_FIRST_PAGE</STRONG> Move to the first page.
+ <STRONG>REQ_INS_CHAR</STRONG> Insert a blank at the cursor.
+ <STRONG>REQ_INS_LINE</STRONG> Insert a blank line at the cursor.
+ <STRONG>REQ_INS_MODE</STRONG> Enter insert mode.
+ <STRONG>REQ_LAST_FIELD</STRONG> Move to the last field.
+ <STRONG>REQ_LAST_PAGE</STRONG> Move to the last field.
+ <STRONG>REQ_LEFT_CHAR</STRONG> Move left in field.
+ <STRONG>REQ_LEFT_FIELD</STRONG> Move left to a field.
+ <STRONG>REQ_NEW_LINE</STRONG> Insert or overlay a new line.
+ <STRONG>REQ_NEXT_CHAR</STRONG> Move to the next char.
+
+ <STRONG>REQ_NEXT_CHOICE</STRONG> Display next field choice.
+ <STRONG>REQ_NEXT_FIELD</STRONG> Move to the next field.
+ <STRONG>REQ_NEXT_LINE</STRONG> Move to the next line.
+ <STRONG>REQ_NEXT_PAGE</STRONG> Move to the next page.
+ <STRONG>REQ_NEXT_PAGE</STRONG> Move to the next page.
+ <STRONG>REQ_NEXT_WORD</STRONG> Move to the next word.
+ <STRONG>REQ_OVL_MODE</STRONG> Enter overlay mode.
+ <STRONG>REQ_PREV_CHAR</STRONG> Move to the previous char.
+ <STRONG>REQ_PREV_CHOICE</STRONG> Display previous field choice.
+ <STRONG>REQ_PREV_FIELD</STRONG> Move to the previous field.
+ <STRONG>REQ_PREV_LINE</STRONG> Move to the previous line.
+ <STRONG>REQ_PREV_PAGE</STRONG> Move to the previous page.
+ <STRONG>REQ_PREV_WORD</STRONG> Move to the previous word.
+ <STRONG>REQ_RIGHT_CHAR</STRONG> Move right in field.
+ <STRONG>REQ_RIGHT_FIELD</STRONG> Move right to a field.
+ <STRONG>REQ_SCR_BCHAR</STRONG> Scroll field backward 1 character.
+ <STRONG>REQ_SCR_BHPAGE</STRONG> Scroll field backward 1/2 page.
+ <STRONG>REQ_SCR_BLINE</STRONG> Scroll field backward 1 line.
+ <STRONG>REQ_SCR_BPAGE</STRONG> Scroll field backward 1 page.
+ <STRONG>REQ_SCR_FCHAR</STRONG> Scroll field forward 1 character.
+ <STRONG>REQ_SCR_FHPAGE</STRONG> Scroll field forward 1/2 page.
+ <STRONG>REQ_SCR_FLINE</STRONG> Scroll field forward 1 line.
+ <STRONG>REQ_SCR_FPAGE</STRONG> Scroll field forward 1 page.
+ <STRONG>REQ_SCR_HBHALF</STRONG> Horizontal scroll field backward 1/2 line.
+ <STRONG>REQ_SCR_HBLINE</STRONG> Horizontal scroll field backward 1 line.
+ <STRONG>REQ_SCR_HFHALF</STRONG> Horizontal scroll field forward 1/2 line.
+ <STRONG>REQ_SCR_HFLINE</STRONG> Horizontal scroll field forward 1 line.
+ <STRONG>REQ_SFIRST_FIELD</STRONG> Move to the sorted first field.
+ <STRONG>REQ_SLAST_FIELD</STRONG> Move to the sorted last field.
+ <STRONG>REQ_SNEXT_FIELD</STRONG> Move to the sorted next field.
+ <STRONG>REQ_SPREV_FIELD</STRONG> Move to the sorted previous field.
+ <STRONG>REQ_UP_CHAR</STRONG> Move up in field.
+ <STRONG>REQ_UP_FIELD</STRONG> Move up to a field.
+ <STRONG>REQ_VALIDATION</STRONG> 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.
-</PRE><H3><a name="h3-Field-
validation">Field validation</a></H3><PRE>
+</PRE><H3><a name="h3-Field-
Validation">Field Validation</a></H3><PRE>
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 <B>set_field_type</B>.
+ may attach using <STRONG>set_field_type</STRONG>.
You can validate a field without making any changes to it using
- <B>REQ_VALIDATION</B>. The form driver also validates a field in these cases:
+ <STRONG>REQ_VALIDATION</STRONG>. The form driver also validates a field in these cases:
- <B>o</B> a call to <B>set_current_field</B> attempts to move to a different field.
+ <STRONG>o</STRONG> a call to <STRONG>set_current_field</STRONG> attempts to move to a different field.
- <B>o</B> a call to <B>set_current_page</B> attempts to move to a different page of
+ <STRONG>o</STRONG> a call to <STRONG>set_current_page</STRONG> attempts to move to a different page of
the form.
- <B>o</B> a request attempts to move to a different field.
+ <STRONG>o</STRONG> a request attempts to move to a different field.
- <B>o</B> a request attempts to move to a different page of the form.
+ <STRONG>o</STRONG> a request attempts to move to a different page of the form.
In each case, the move fails if the field is invalid.
data from the window associated with the field to the field buffer.
-</PRE><H3><a name="h3-Mouse-
handling">Mouse handling</a></H3><PRE>
+</PRE><H3><a name="h3-Mouse-
Handling">Mouse Handling</a></H3><PRE>
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
If you click at an field inside the display area of the form:
- <B>o</B> the form cursor is positioned to that field.
+ <STRONG>o</STRONG> the form cursor is positioned to that field.
- <B>o</B> If you double-click a field, the form cursor is positioned to
- that field and <B>E_UNKNOWN_COMMAND</B> is returned. This return value
+ <STRONG>o</STRONG> If you double-click a field, the form cursor is positioned to
+ that field and <STRONG>E_UNKNOWN_COMMAND</STRONG> 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.
- <B>o</B> If a translation into a request was done, <B>form_driver</B> returns
+ <STRONG>o</STRONG> If a translation into a request was done, <STRONG>form_driver</STRONG> 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 <B>E_REQUEST_DENIED</B> is returned.
+ translated into a form request an <STRONG>E_REQUEST_DENIED</STRONG> is returned.
-</PRE><H3><a name="h3-Application-defined-
commands">Application-defined commands</a></H3><PRE>
+</PRE><H3><a name="h3-Application-defined-
Commands">Application-defined Commands</a></H3><PRE>
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 <B>E_UNKNOWN_COMMAND</B>. Application-defined commands
- should be defined relative to <B>MAX_COMMAND</B>, the maximum value of these
+ command and returns <STRONG>E_UNKNOWN_COMMAND</STRONG>. Application-defined commands
+ should be defined relative to <STRONG>MAX_COMMAND</STRONG>, the maximum value of these
pre-defined requests.
</PRE><H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
- <B>form_driver</B> returns one of the following error codes:
+ <STRONG>form_driver</STRONG> returns one of the following error codes:
- <B>E_OK</B> The routine succeeded.
+ <STRONG>E_OK</STRONG> The routine succeeded.
- <B>E_BAD_ARGUMENT</B>
+ <STRONG>E_BAD_ARGUMENT</STRONG>
Routine detected an incorrect or out-of-range argument.
- <B>E_BAD_STATE</B>
+ <STRONG>E_BAD_STATE</STRONG>
Routine was called from an initialization or termination function.
- <B>E_NOT_POSTED</B>
+ <STRONG>E_NOT_POSTED</STRONG>
The form has not been posted.
- <B>E_INVALID_FIELD</B>
+ <STRONG>E_INVALID_FIELD</STRONG>
Contents of field is invalid.
- <B>E_NOT_CONNECTED</B>
+ <STRONG>E_NOT_CONNECTED</STRONG>
No fields are connected to the form.
- <B>E_REQUEST_DENIED</B>
+ <STRONG>E_REQUEST_DENIED</STRONG>
The form driver could not process the request.
- <B>E_SYSTEM_ERROR</B>
- System error occurred (see <B>errno(3)</B>).
+ <STRONG>E_SYSTEM_ERROR</STRONG>
+ System error occurred (see <STRONG>errno(3)</STRONG>).
- <B>E_UNKNOWN_COMMAND</B>
+ <STRONG>E_UNKNOWN_COMMAND</STRONG>
The form driver code saw an unknown request code.
-</PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
- <B><A HREF="curses.3X.html">curses(3X)</A></B>, <B><A HREF="form.3X.html">form(3X)</A></B>, <B><A HREF="form_fieldtype.3X.html">form_fieldtype(3X)</A></B>, <B><A HREF="form_field_buffer.3X.html">form_field_buffer(3X)</A></B>,
- <B><A HREF="form_field_validation.3X.html">form_field_validation(3X)</A></B>, <B><A HREF="form_variables.3X.html">form_variables(3X)</A></B>, <B><A HREF="curs_getch.3X.html">getch(3X)</A></B>.
-
-
-</PRE><H2><a name="h2-NOTES">NOTES</a></H2><PRE>
- The header file <B><form.h></B> automatically includes the header files
- <B><curses.h></B>.
-
-
</PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
These routines emulate the System V forms library. They were not
supported on Version 7 or BSD versions.
Raymond.
+</PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
+ <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="form.3x.html">form(3x)</A></STRONG>, <STRONG><A HREF="form_fieldtype.3x.html">form_fieldtype(3x)</A></STRONG>, <STRONG><A HREF="form_field_buffer.3x.html">form_field_buffer(3x)</A></STRONG>,
+ <STRONG><A HREF="form_field_validation.3x.html">form_field_validation(3x)</A></STRONG>, <STRONG><A HREF="form_variables.3x.html">form_variables(3x)</A></STRONG>, <STRONG><A HREF="curs_getch.3x.html">getch(3x)</A></STRONG>
+
+
- <B><A HREF="form_driver.3X.html">form_driver(3X)</A></B>
+ncurses 6.4 2024-04-20 <STRONG><A HREF="form_driver.3x.html">form_driver(3x)</A></STRONG>
</PRE>
<div class="nav">
<ul>
<ul>
<li><a href="#h3-form_driver">form_driver</a></li>
<li><a href="#h3-form_driver_w">form_driver_w</a></li>
-<li><a href="#h3-Form-driver-requests">Form-driver requests</a></li>
-<li><a href="#h3-Field-validation">Field validation</a></li>
-<li><a href="#h3-Mouse-handling">Mouse handling</a></li>
-<li><a href="#h3-Application-defined-commands">Application-defined commands</a></li>
+<li><a href="#h3-Form-Driver-Requests">Form Driver Requests</a></li>
+<li><a href="#h3-Field-Validation">Field Validation</a></li>
+<li><a href="#h3-Mouse-Handling">Mouse Handling</a></li>
+<li><a href="#h3-Application-defined-Commands">Application-defined Commands</a></li>
</ul>
</li>
<li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li>
-<li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>
-<li><a href="#h2-NOTES">NOTES</a></li>
<li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
<li><a href="#h2-AUTHORS">AUTHORS</a></li>
+<li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>
</ul>
</div>
</BODY>
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