annotate test/testbitmap.c @ 3846:66fb40445587 SDL-ryan-multiple-audio-device

Removed distinction between "available" and "init" in audio backends, since both had to be checked for success as a pair at the higher level and several of the Available methods were just always-succeed placeholders anyhow. Now the availability check is done in the init code, and the higher level tries all possible drivers until one manages to initialize successfully.
author Ryan C. Gordon <icculus@icculus.org>
date Tue, 17 Oct 2006 09:09:21 +0000
parents c121d94672cb
children 7e449145b6ca f55c87ae336b
rev   line source
0
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1
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2 /* Simple program: Test bitmap blits */
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3
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4 #include <stdio.h>
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5 #include <stdlib.h>
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6 #include <string.h>
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7
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8 #include "SDL.h"
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9 #include "picture.xbm"
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10
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11 /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
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12 static void
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13 quit(int rc)
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14 {
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15 SDL_Quit();
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16 exit(rc);
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17 }
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18
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19 SDL_Surface *
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20 LoadXBM(SDL_Surface * screen, int w, int h, Uint8 * bits)
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21 {
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22 SDL_Surface *bitmap;
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23 Uint8 *line;
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24
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25 /* Allocate the bitmap */
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26 bitmap = SDL_CreateRGBSurface(SDL_SWSURFACE, w, h, 1, 0, 0, 0, 0);
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27 if (bitmap == NULL) {
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28 fprintf(stderr, "Couldn't allocate bitmap: %s\n", SDL_GetError());
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29 return (NULL);
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30 }
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31
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32 /* Copy the pixels */
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33 line = (Uint8 *) bitmap->pixels;
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34 w = (w + 7) / 8;
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35 while (h--) {
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36 memcpy(line, bits, w);
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37 /* X11 Bitmap images have the bits reversed */
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38 {
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39 int i, j;
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40 Uint8 *buf, byte;
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41 for (buf = line, i = 0; i < w; ++i, ++buf) {
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42 byte = *buf;
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43 *buf = 0;
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44 for (j = 7; j >= 0; --j) {
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45 *buf |= (byte & 0x01) << j;
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46 byte >>= 1;
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47 }
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48 }
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49 }
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50 line += bitmap->pitch;
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51 bits += w;
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52 }
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53 return (bitmap);
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54 }
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55
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56 int
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57 main(int argc, char *argv[])
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58 {
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59 SDL_Surface *screen;
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60 SDL_Surface *bitmap;
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61 Uint8 video_bpp;
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62 Uint32 videoflags;
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63 Uint8 *buffer;
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64 int i, k, done;
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65 SDL_Event event;
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66 Uint16 *buffer16;
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67 Uint16 color;
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68 Uint8 gradient;
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69 SDL_Color palette[256];
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71
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72 /* Initialize SDL */
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73 if (SDL_Init(SDL_INIT_VIDEO) < 0) {
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74 fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError());
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75 return (1);
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76 }
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77
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78 video_bpp = 0;
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79 videoflags = SDL_SWSURFACE;
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80 while (argc > 1) {
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81 --argc;
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82 if (strcmp(argv[argc - 1], "-bpp") == 0) {
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83 video_bpp = atoi(argv[argc]);
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84 --argc;
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85 } else if (strcmp(argv[argc], "-warp") == 0) {
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86 videoflags |= SDL_HWPALETTE;
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87 } else if (strcmp(argv[argc], "-hw") == 0) {
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88 videoflags |= SDL_HWSURFACE;
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89 } else if (strcmp(argv[argc], "-fullscreen") == 0) {
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90 videoflags |= SDL_FULLSCREEN;
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91 } else {
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92 fprintf(stderr,
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93 "Usage: %s [-bpp N] [-warp] [-hw] [-fullscreen]\n",
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94 argv[0]);
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95 quit(1);
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96 }
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97 }
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98
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99 /* Set 640x480 video mode */
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100 if ((screen = SDL_SetVideoMode(640, 480, video_bpp, videoflags)) == NULL) {
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101 fprintf(stderr, "Couldn't set 640x480x%d video mode: %s\n",
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102 video_bpp, SDL_GetError());
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103 quit(2);
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104 }
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105
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106 if (video_bpp == 8) {
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107 /* Set a gray colormap, reverse order from white to black */
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108 for (i = 0; i < 256; ++i) {
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109 palette[i].r = 255 - i;
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110 palette[i].g = 255 - i;
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111 palette[i].b = 255 - i;
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112 }
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113 SDL_SetColors(screen, palette, 0, 256);
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114 }
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115
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116 /* Set the surface pixels and refresh! */
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117 if (SDL_LockSurface(screen) < 0) {
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118 fprintf(stderr, "Couldn't lock the display surface: %s\n",
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119 SDL_GetError());
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120 quit(2);
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121 }
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122 buffer = (Uint8 *) screen->pixels;
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123 if (screen->format->BytesPerPixel != 2) {
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124 for (i = 0; i < screen->h; ++i) {
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125 memset(buffer, (i * 255) / screen->h, screen->pitch);
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126 buffer += screen->pitch;
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609543e2b3a1 Date: Fri, 15 Aug 2003 09:13:59 +0300
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127 }
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128 } else {
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129 for (i = 0; i < screen->h; ++i) {
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130 gradient = ((i * 255) / screen->h);
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131 color = SDL_MapRGB(screen->format, gradient, gradient, gradient);
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132 buffer16 = (Uint16 *) buffer;
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133 for (k = 0; k < screen->w; k++) {
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134 *(buffer16 + k) = color;
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135 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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136 buffer += screen->pitch;
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609543e2b3a1 Date: Fri, 15 Aug 2003 09:13:59 +0300
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137 }
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c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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138 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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139 SDL_UnlockSurface(screen);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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140 SDL_UpdateRect(screen, 0, 0, 0, 0);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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141
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142 /* Load the bitmap */
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143 bitmap = LoadXBM(screen, picture_width, picture_height,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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144 (Uint8 *) picture_bits);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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145 if (bitmap == NULL) {
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146 quit(1);
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147 }
0
74212992fb08 Initial revision
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148
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149 /* Wait for a keystroke */
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150 done = 0;
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diff changeset
151 while (!done) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
152 /* Check for events */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
153 while (SDL_PollEvent(&event)) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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154 switch (event.type) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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155 case SDL_MOUSEBUTTONDOWN:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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156 {
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157 SDL_Rect dst;
0
74212992fb08 Initial revision
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158
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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159 dst.x = event.button.x - bitmap->w / 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
160 dst.y = event.button.y - bitmap->h / 2;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
161 dst.w = bitmap->w;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
162 dst.h = bitmap->h;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
163 SDL_BlitSurface(bitmap, NULL, screen, &dst);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents: 1151
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164 SDL_UpdateRects(screen, 1, &dst);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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165 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
166 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
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diff changeset
167 case SDL_KEYDOWN:
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168 /* Any key press quits the app... */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
169 done = 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1151
diff changeset
170 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1151
diff changeset
171 case SDL_QUIT:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1151
diff changeset
172 done = 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1151
diff changeset
173 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1151
diff changeset
174 default:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1151
diff changeset
175 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1151
diff changeset
176 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1151
diff changeset
177 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1151
diff changeset
178 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1151
diff changeset
179 SDL_FreeSurface(bitmap);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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diff changeset
180 SDL_Quit();
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents: 1151
diff changeset
181 return (0);
0
74212992fb08 Initial revision
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parents:
diff changeset
182 }