32 lines
568 B
C
32 lines
568 B
C
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#include <unistd.h>
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#include <sys/ioctl.h>
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#include <fcntl.h>
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#include <stdio.h>
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int main()
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{
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int fd = open("/dev/fb0", O_WRONLY | O_CLOEXEC);
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if(fd < 0)
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{
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perror("open");
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return 1;
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}
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int fb_width = ioctl(fd, FB_GET_WIDTH);
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if(fb_width < 0)
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{
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perror("ioctl(FB_GET_WIDTH)");
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return 1;
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}
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int fb_height = ioctl(fd, FB_GET_HEIGHT);
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if(fb_height < 0)
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{
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perror("ioctl(FB_GET_HEIGHT)");
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return 1;
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}
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printf("Your screen is %dx%d\n", fb_width, fb_height);
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close(fd);
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}
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