Text Edition

This widget enable you edit one line of text, with good support for non-US characters, navegation keys (like arrows) and verification functions.

The edition keys are:

keypad_enter    65421 jump to next editbox
key_escape      65307 clear buffer
key_delete      65535 delete right char
key_backspace   65288 delete left char
key_arrow_left  65361 jump to left char
key_arrow_right 65363 jump to right char
key_arrow_up    65362 jump to last editbox
key_arrow_down  65364 jump to next editbox
key_tab         65289 jump to next editbox*
key_return      65293 jump to next editbox
key_home        65360 jump to first char
key_end         65367 jump to last char

* can be reversed w/ shift+tab!

If you jump to last or next editbox, a broadcast will be generated and the formatting function will be called. In addition, many international compose keys are available without any special configuration of X11:

key_agrave      224
key_aacute      225
key_acircunflex 226
key_atilde      227
key_adiaeresis  228
key_egrave      232
key_eacute      233
key_ecircunflex 234
key_ediaeresis  235
key_igrave      236
key_iacute      237
key_icircunflex 238
key_idiaeresis  239
key_ograve      242
key_oacute      243
key_ocircunflex 244
key_otilde      245
key_odiaeresis  246
key_ugrave      249
key_uacute      250
key_ucircunflex 251
key_udiaeresis  252
key_cedila      231
key_ntilde      241
key_yacute      253
key_ydiaeresis  255

The support for text edition in XSTEP was not enhanced since version 2.0 and will be fully revised in future versions.

struct xtree *edit_create(x,y,w,h,buffer,size,f);

int x,y,w,h,size;
char *buffer;
void (f*)(struct xtree *));

Create a editable textbox in position (x,y) and size (w,h). The 'buffer' can be edited.  Many keys are accepted for edition and a optional callback for a formatting or verification function is available.

#include <xstep.h>

char buffer1[64],buffer2[64];

void function(struct xtree *t) {

        if(atof(t->b)) 
                sprintf(t->b,"US$ %.02f",atof(t->b));

        broadcast++;
}

void xmain(int n,char *p[]) {

        window_create(0,0,400,180,"edit_create");
        edit_create(8,8,200,21,buffer1,64,function);
        edit_create(8,8+24,200,21,buffer2,64,function);
        button_create(-8,-8,72,24,"close",window_close);
}

This is just a window with two edit widgets :)

You can test all cursor keys and tab/shitf+tab keys to navigate in these two boxes. If you type enter, up arrow, down arrow, tab or shift+tab, a verification function will be called. This verification function will make a test: if you type a number, this number will be formated :)