X-Git-Url: https://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=doc%2Fhtml%2Fman%2Fform_field_buffer.3x.html;h=4e0bba1149222c98e8a62049ebef53160d54a9c2;hp=8e99806ddbf31890f6f2e176c747c7f0f4ab09db;hb=77afe78361875f531dc2bf8d73f2e781c8e76176;hpb=40cf934fff2d2790c060619e3a29bd54c20994b0;ds=sidebyside diff --git a/doc/html/man/form_field_buffer.3x.html b/doc/html/man/form_field_buffer.3x.html index 8e99806d..4e0bba11 100644 --- a/doc/html/man/form_field_buffer.3x.html +++ b/doc/html/man/form_field_buffer.3x.html @@ -2,7 +2,7 @@
@@ -65,21 +65,41 @@The function set_field_buffer sets the numbered buffer of - the given field to contain a given string. Buffer 0 is - the displayed value of the field; other numbered buffers - may be allocated by applications through the nbuf argument - of (see form_field_new(3x)) but are not manipulated by the - forms library. The function field_buffer returns the - address of the buffer. Please note that this buffer has - always the length of the buffer, that means that it may - typically contain trailing spaces. If you entered leading - spaces the buffer may also contain them. If you want the - raw data, you must write your own routine that copies the - value out of the buffer and removes the leading and trail- - ing spaces. Please note also, that subsequent operations - on the form will probably change the content of the - buffer. So do not use it for long term storage of the - entered form data. + the given field to contain a given string: + + - Buffer 0 is the displayed value of the field. + + - Other numbered buffers may be allocated by applica- + tions through the nbuf argument of (see + form_field_new(3x)) but are not manipulated by the + forms library. + + The function field_buffer returns a pointer to the con- + tents of the given numbered buffer: + + - The buffer contents always have the same length, and + are padded with trailing spaces as needed to ensure + this length is the same. + + - The buffer may contain leading spaces, depending on + how it was set. + + - The buffer contents are set with set_field_buffer, + or as a side effect of any editing operations on the + corresponding field. + + - Editing operations are based on the window which + displays the field, rather than a string. The win- + dow contains only printable characters, and is + filled with blanks. If you want the raw data, you + must write your own routine that copies the value + out of the buffer and removes the leading and trail- + ing spaces. + + - Because editing operations change the content of the + buffer to correspond to the window, you should not + rely on using buffers for long-term storage of form + data. The function set_field_status sets the associated status flag of field; field_status gets the current value. The @@ -130,8 +150,8 @@ When configured for wide-characters, field_buffer returns a pointer to temporary storage (allocated and freed by the library). The application should not attempt to modify - the data. It will be freed on the next call to - field_buffer to return the same buffer. <curses.h>. + the data. It will be freed on the next call to field_buf- + fer to return the same buffer. <curses.h>.