转自：http://blog.csdn.net/xiangpengmeng/article/details/6396589
考虑到很多人也可能都需要这些类似的功能， 尤其是搞嵌入式的， 我解决这个问题的思路也是从android系统中借鉴的，这个功能需要首先在内核中添加uinput模块， 大家也可以将这个模块直接编译进内核里面， 编译内核大家都熟悉， 我就不在说了， 都是整天配置编译的人啊。。。
下面两个文件直接取自我们一个使用手机远程控制系统， 下面是代码， 代码中已经有了注释， 不在解释了， 希望以上代码会对你有所帮助。
/** * @file The file is using for (>>> function<<<) * @author imxiangpeng * @time * * Copyright (C) [email protected], Inc. All Rights Reserved. * Written by [email protected] * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ #ifndef RCBOARDMOUSE_H #define RCBOARDMOUSE_H #include <string.h> #include <stdio.h> #include <sys/types.h> #include <sys/stat.h> #include <fcntl.h> #include <linux/input.h> #include <linux/uinput.h> #include <sys/time.h> #include <unistd.h> #include <errno.h> static void kbdms_open_dev(); static int kbdms_init_dev(char *dev); extern void kbdms_close_dev(void); /* you can call the function explicitly if you no need the function anymore*/ /* only the following functions which you can called, we initialise the device when you call the following function firstly */ /* key_code: referce to linux/input.h is_pressed_or_release: 1 if the key is pressed , 0 :release 注意按键有按下，就必然会有释放，如果没有释放，再次调用按下函数是没有反映的 */ extern void kbdms_send_button_event(unsigned short key_code, int is_pressed_or_release); /* is_rel:1--relative move, else--absolutely if you want to send left or right mouse button , please call kbdms_send_button_event */ //extern void kbdms_send_mouse_move_events(unsigned short is_rel, unsigned short pos_x, unsigned short pos_y); extern void kbdms_send_mouse_move_events(unsigned short is_rel, short pos_x, short pos_y); extern void kbdms_send_wheel_events(short wheel_value); #endif /* RCBOARDMOUSE_H */
/** * @file The file is using for (>>> function<<<) * @author imxiangpeng * @time * * Copyright (C) [email protected], Inc. All Rights Reserved. * Written by [email protected] * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ #include "rcboardmouse.h" static int uinput_fd = -1; static struct uinput_user_dev uinput; static struct input_event event; static void kbdms_open_dev(){ int ret = -1; ret = kbdms_init_dev("/dev/uinput"); if(ret < 0){ ret = kbdms_init_dev("/dev/input/uinput"); if(ret < 0){ printf("call kbdms_open_dev failure/n"); return; } } } static int kbdms_init_dev(char *dev){ int i = 0; if(dev == NULL){ printf("The device is null/n"); return -1; } uinput_fd = open(dev, O_WRONLY | O_NDELAY); if(uinput_fd < 0){ perror("open uinput device failure:"); return -1; } memset(&uinput, 0, sizeof(uinput)); strncpy(uinput.name,"xiangpeng's virtual device",UINPUT_MAX_NAME_SIZE); uinput.id.version = 4; uinput.id.bustype = BUS_USB; ioctl(uinput_fd, UI_SET_EVBIT, EV_KEY); ioctl(uinput_fd, UI_SET_EVBIT, EV_REL); ioctl(uinput_fd, UI_SET_RELBIT, REL_X); ioctl(uinput_fd, UI_SET_RELBIT, REL_Y); ioctl(uinput_fd, UI_SET_RELBIT, REL_WHEEL); for(i = 0; i < 256; i++){ ioctl(uinput_fd, UI_SET_KEYBIT, i); } /* end for */ ioctl(uinput_fd, UI_SET_KEYBIT, BTN_MOUSE); ioctl(uinput_fd, UI_SET_KEYBIT, BTN_TOUCH); ioctl(uinput_fd, UI_SET_KEYBIT, BTN_LEFT); ioctl(uinput_fd, UI_SET_KEYBIT, BTN_MIDDLE); ioctl(uinput_fd, UI_SET_KEYBIT, BTN_RIGHT); ioctl(uinput_fd, UI_SET_KEYBIT, BTN_FORWARD); ioctl(uinput_fd, UI_SET_KEYBIT, BTN_BACK); /* Create input device into input sub-system */ write(uinput_fd, &uinput, sizeof(uinput)); if(ioctl(uinput_fd, UI_DEV_CREATE)){ perror("create uinput device"); return -1; } return 0; /* success */ } /* end init_uinput_dev function */ /* is_rel:1--relative move, else--absolutely which_button_pressed: 0--no button press, 1--left button press, 2--right button press 3--middle button press */ void kbdms_send_mouse_move_events(unsigned short is_rel, short pos_x, short pos_y){ if(uinput_fd <= 0){ printf("RC : %s please call dbdms_init_dev first/n",__FUNCTION__); kbdms_open_dev(); if(uinput_fd <= 0) return; } /* Move pointer to (0,0) location */ memset(&event, 0, sizeof(event)); gettimeofday(&event.time, NULL); event.type = (is_rel == 1)?EV_REL:EV_ABS; event.code = (is_rel == 1)?REL_X:ABS_X; event.value = pos_x; write(uinput_fd, &event, sizeof(event)); event.type = EV_SYN; event.code = SYN_REPORT; event.value = 0; write(uinput_fd, &event, sizeof(event)); memset(&event, 0, sizeof(event)); gettimeofday(&event.time, NULL); event.type = (is_rel == 1)?EV_REL:EV_ABS; event.code = (is_rel == 1)?REL_Y:ABS_Y; event.value = pos_y; write(uinput_fd, &event, sizeof(event)); /* 鼠标点击事件我们也通过 kbdms_send_button_event 来发送*/ } /* end send_click_events function */ /* key_code: referce to linux/input.h is_pressed_or_release: 1 if the key is pressed , 0 :release */ void kbdms_send_button_event(unsigned short key_code, int is_pressed_or_release){ if(uinput_fd <= 0){ printf("RC : %s please call dbdms_init_dev first/n",__FUNCTION__); kbdms_open_dev(); if(uinput_fd <= 0) return; } /* report button click --press event */ memset(&event, 0, sizeof(event)); gettimeofday(&event.time, NULL); event.type = EV_KEY; event.code = key_code; event.value = is_pressed_or_release; write(uinput_fd, &event, sizeof(event)); event.type = EV_SYN; event.code = SYN_REPORT; event.value = 0; write(uinput_fd, &event, sizeof(event)); } void kbdms_send_wheel_events(short wheel_value){ if(uinput_fd <= 0){ printf("RC : %s please call dbdms_init_dev first/n",__FUNCTION__); kbdms_open_dev(); if(uinput_fd <= 0) return; } /* Move pointer to (0,0) location */ memset(&event, 0, sizeof(event)); gettimeofday(&event.time, NULL); event.type = EV_REL; event.code = REL_WHEEL; event.value = wheel_value; write(uinput_fd, &event, sizeof(event)); event.type = EV_SYN; event.code = SYN_REPORT; event.value = 0; write(uinput_fd, &event, sizeof(event)); } /* end send_click_events function */ void kbdms_close_dev(void){ if(uinput_fd > 0){ ioctl(uinput_fd, UI_DEV_DESTROY); close(uinput_fd); } } #if 0 /* using for test all the functions */ int main(int argc, char **argv){ if(argc <2){ printf("Please specified the uinput device path/n"); return -1; } printf("The device is :%s/n",argv[1]); if(kbdms_init_dev(argv[1]) < 0){ printf("Call init_uinput_dev failure/n"); return -1; } while(1){ printf("we will send a click and a button event/n"); //send_click_events(); kbdms_send_button_event(KEY_LEFT, 1); kbdms_send_button_event(KEY_LEFT, 0); sleep(3); kbdms_send_button_event(KEY_DOWN,1); kbdms_send_button_event(KEY_DOWN,0); sleep(2); kbdms_send_button_event(KEY_DOWN,1); kbdms_send_button_event(KEY_DOWN,0); sleep(2); printf("we will call kbdms_send_wheel_events/n"); kbdms_send_wheel_events(10); printf("We will wheel back up/n"); sleep(2); kbdms_send_wheel_events(-10); } kbdms_close_dev(); return 0; } #endif
希望以上代码会对你有所帮助， 如果有什么疑问也可以给我发邮件， 邮件地址在每个文件的头部
当然， 本人计算机都是自学的， 如果各位看着在编程风格和代码书写上如果有什么不足， 希望大家可以提出来