Allegro GUI isn't refreshing

Allegro GUI isn't refreshing

Ceagon Xylas

Member #5,495

February 2005

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 =/

ReyBrujo

Moderator

January 2001

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?

--
RB
光子「あたしただ…奪う側に回ろうと思っただけよ」
Mitsuko's last words, Battle Royale

Ceagon Xylas

Member #5,495

February 2005

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.

ReyBrujo

Moderator

January 2001

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

--
RB
光子「あたしただ…奪う側に回ろうと思っただけよ」
Mitsuko's last words, Battle Royale

Ceagon Xylas

Member #5,495

February 2005

Oh wow! Thanks a whole lot! =D