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| Icon on Mac |
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ortica
Member #17,107
August 2019
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Hi guys, I have a problem with the icon. I usually use a mac, now with Catalina beta, and if I use these instructions: 1 icon = al_load_bitmap("../assets/img/ico.png");
2 al_convert_mask_to_alpha(icon, al_map_rgb(0, 255, 0));
3 al_set_display_icon(display, icon);
the screen goes black, the icon is loaded, and the game works (I entered some cout and I see that the game below continues to run). |
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Peter Hull
Member #1,136
March 2001
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I tried the Allegro example program ex_icon and it worked OK (on Mojave) - maybe look at the source for that and see if there's some difference between the way it does it and the way you're doing it?
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ortica
Member #17,107
August 2019
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The examples work in the sense that they load the icon. But they don't have anything drawn on the screen, so I can't test them as they are. I modified the ex_icon.c file in this way 1#include <allegro5/allegro.h>
2#include "allegro5/allegro_image.h"
3
4#include "common.c"
5
6int main(int argc, char **argv)
7{
8 ALLEGRO_DISPLAY *display;
9 ALLEGRO_BITMAP *icon1;
10 ALLEGRO_BITMAP *icon2;
11 // add this line
12 ALLEGRO_BITMAP *img;
13 ALLEGRO_EVENT_QUEUE *queue;
14 ALLEGRO_TIMER *timer;
15 int i;
16
17 (void)argc;
18 (void)argv;
19
20 if (!al_init()) {
21 abort_example("Could not init Allegro.\n");
22 }
23 al_install_keyboard();
24 al_init_image_addon();
25 init_platform_specific();
26
27 display = al_create_display(320, 200);
28 if (!display) {
29 abort_example("Error creating display\n");
30 }
31 al_clear_to_color(al_map_rgb_f(0, 0, 0));
32 al_flip_display();
33 // add this line
34 img = al_load_bitmap("data/alexlogo.bmp");
35 /* First icon: Read from file. */
36 icon1 = al_load_bitmap("data/icon.tga");
37 if (!icon1) {
38 abort_example("icon.tga not found\n");
39 }
40
41 /* Second icon: Create it. */
42 al_set_new_bitmap_flags(ALLEGRO_MEMORY_BITMAP);
43 icon2 = al_create_bitmap(16, 16);
44 al_set_target_bitmap(icon2);
45 for (i = 0; i < 256; i++) {
46 int u = i % 16;
47 int v = i / 16;
48 al_put_pixel(u, v, al_map_rgb_f(u / 15.0, v / 15.0, 1));
49 }
50 al_set_target_backbuffer(display);
51
52 al_set_window_title(display, "Changing icon example");
53
54 timer = al_create_timer(0.5);
55 queue = al_create_event_queue();
56 al_register_event_source(queue, al_get_keyboard_event_source());
57 al_register_event_source(queue, al_get_display_event_source(display));
58 al_register_event_source(queue, al_get_timer_event_source(timer));
59 al_start_timer(timer);
60
61 for (;;) {
62 ALLEGRO_EVENT event;
63 al_wait_for_event(queue, &event);
64
65 if (event.type == ALLEGRO_EVENT_KEY_DOWN &&
66 event.keyboard.keycode == ALLEGRO_KEY_ESCAPE) {
67 break;
68 }
69 if (event.type == ALLEGRO_EVENT_DISPLAY_CLOSE) {
70 break;
71 }
72 if (event.type == ALLEGRO_EVENT_TIMER) {
73 // add this line
74 al_draw_bitmap(img, 0, 0, 0);
75 al_set_display_icon(display, (event.timer.count & 1) ? icon2 : icon1);
76 // add this line
77 al_flip_display();
78 }
79 }
80
81 al_uninstall_system();
82
83 return 0;
84}
and behaves the same way. |
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Peter Hull
Member #1,136
March 2001
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That is odd because your code worked OK for me.
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