Allegro GUI isn't refreshing http://www.allegro.cc/forums/view/560103 Allegro.cc Forum Thread matthew@allegro.cc (Matthew Leverton) Tue, 17 Jan 2006 12:17:44 +0000

My code is

1#include <allegro.h>
2#define _WINSOCKAPI_
3#include <winalleg.h>
4 
5char text_1[400]="Welcome to this gui thingy!\n\n";
6char edit_1[50];
7 
8//adds edit_1 to the end of text_1
9int ptext(void) {
10 ustrcat(text_1,"\n");
11 ustrcat(text_1,edit_1);
12 ustrcpy(edit_1,"");
13 return D_O_K;
14};
15 
16int func1(void) {
17 //alert goes here
18 return D_O_K;
19};
20 
21DIALOG the_dialog[]={
22 /* (dialog proc) (x) (y) (w) (h) (fg) (bg) (key) (flags) (d1) (d2) (dp) (dp2) (dp3) */
23 { d_clear_proc, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, NULL, NULL },
24 { d_textbox_proc, 5, 20, 630, 320, 0, 0, 0,D_SELECTED, 0, 0, text_1, NULL, NULL },
25 { d_edit_proc, 5, 342, 300, 13, 0, 0, 0, 0, 49, 0, edit_1, NULL, NULL },
26
27 /* keyboard intakes */
28 { d_keyboard_proc, 0, 0, 0, 0, 0, 0, 0, 0,KEY_ENTER, 0, (void*)ptext, NULL, NULL },
29 { d_keyboard_proc, 0, 0, 0, 0, 0, 0, 0, 0, KEY_F1, 0, (void*)func1, NULL, NULL },
30
31 /* system */
32 { d_yield_proc, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, NULL, NULL, NULL },
33 { NULL, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, NULL, NULL, NULL }
34};
35 
36int main(int argc, char* argv[]) {
37 allegro_init();
38 install_keyboard(); install_timer();
39 install_mouse();
40 set_color_depth(32);
41 set_gfx_mode(GFX_AUTODETECT_WINDOWED,640,480,0,0);
42 font=load_font("pcx/verdana.pcx",0,0); //one of my fonts
43
44 gui_set_screen(screen);
45 gui_fg_color=makecol(88,132,176);
46 gui_mg_color=makecol(0,0,0);
47 gui_bg_color=makecol(31,47,63);
48 set_dialog_color(the_dialog,gui_fg_color,gui_bg_color);
49
50 do_dialog(the_dialog,2);
51 
52 allegro_exit();
53}END_OF_MAIN()

The problem is whenever...say...I type something into 'd_edit_proc' and press enter, I have to press another key or hover over the text box to tell it to update. By update I mean show that edit_1 is empty and that text_1 has been added to. How can I fix this?
Sorry for the bad explanation, but I'm not sure how else to explain it =/

]]> no-reply@allegro.cc (Ceagon Xylas) Tue, 17 Jan 2006 10:55:49 +0000

I believe the problem is that your edit box captures the ENTER. Why don't you create your own edit box that, if you got an ENTER, raises it to the dialog?

]]> no-reply@allegro.cc (ReyBrujo) Tue, 17 Jan 2006 11:05:40 +0000

Hmm... can you give me a more detailed explination of what creating my 'own edit box' would consist of?
Like what you mean exactly... This? 

while(!program_end) {
  textprintf(buffer,font,0,0,makecol(255,255,255),edit_1);
  //blit the buffer and stuff
}

Should I use the DIALOG_PLAYER stuff? Well, I guess I'd have to use my method above.

]]> no-reply@allegro.cc (Ceagon Xylas) Tue, 17 Jan 2006 11:08:03 +0000

The easiest way is to make your ptext function return D_REDRAW_ALL instead of D_O_K. And, if the user presses ENTER in the edit box, to call ptext.

See here (I deleted a few lines because I am on Linux):

1#include <allegro.h>
2 
3char text_1[400]="Welcome to this gui thingy!\n\n";
4char edit_1[50];
5 
6//adds edit_1 to the end of text_1
7int ptext(void) {
8 ustrcat(text_1,"\n");
9 ustrcat(text_1,edit_1);
10 ustrcpy(edit_1,"");
11 
12 return D_REDRAW_ALL;
13};
14 
15int func1(void) {
16 //alert goes here
17 return D_O_K;
18};
19 
20DIALOG the_dialog[];
21 
22int d_myedit_proc(int msg, DIALOG *d, int c) {
23 if (msg == MSG_CHAR && (c >> 8) == KEY_ENTER) {
24 ptext();
25 return D_O_K;
26 }
27 else
28 return d_edit_proc(msg, d, c);
29}
30 
31DIALOG the_dialog[]={
32 /* (dialog proc) (x) (y) (w) (h) (fg) (bg) (key) (flags) (d1) (d2) (dp) (dp2) (dp3) */
33 { d_clear_proc, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, NULL, NULL },
34 { d_textbox_proc, 5, 20, 630, 320, 0, 0, 0,D_SELECTED, 0, 0, text_1, NULL, NULL },
35 { d_myedit_proc, 5, 342, 300, 13, 0, 0, 0, 0, 49, 0, edit_1, NULL, NULL },
36
37 /* keyboard intakes */
38 { d_keyboard_proc, 0, 0, 0, 0, 0, 0, 0, 0,KEY_ENTER, 0, (void*)ptext, NULL, NULL },
39 { d_keyboard_proc, 0, 0, 0, 0, 0, 0, 0, 0, KEY_F1, 0, (void*)func1, NULL, NULL },
40
41 /* system */
42 { d_yield_proc, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, NULL, NULL, NULL },
43 { NULL, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, NULL, NULL, NULL }
44};
45 
46int main(int argc, char* argv[]) {
47 allegro_init();
48 install_keyboard(); install_timer();
49 install_mouse();
50 set_color_depth(32);
51 set_gfx_mode(GFX_AUTODETECT_WINDOWED,640,480,0,0);
52
53 gui_set_screen(screen);
54 gui_fg_color=makecol(88,132,176);
55 gui_mg_color=makecol(0,0,0);
56 gui_bg_color=makecol(31,47,63);
57 set_dialog_color(the_dialog,gui_fg_color,gui_bg_color);
58
59 do_dialog(the_dialog,2);
60 
61 allegro_exit();
62}END_OF_MAIN()

A better solution should be to have ptext send a message to the textbox to redraw, so that there is only one redraw. But that is homework for you ;)

]]> no-reply@allegro.cc (ReyBrujo) Tue, 17 Jan 2006 11:40:02 +0000

Oh wow! Thanks a whole lot! =D

]]> no-reply@allegro.cc (Ceagon Xylas) Tue, 17 Jan 2006 12:17:44 +0000