linux内核驱动应用三合一

1、18 LCD ( PDA TFT m Framebuffer Linux N mlJ !m Linux 18.1 ( LCD J 18.2 (m t 18.3 (mH 18.4 18.8 u(mq t 18.3 18.4 18.8 iH u e 18.9 ( Linux m UI (18.10 ( S3C6410 LCD M LCD / 章第LCD / 18İ LCD Ou ;! 3 f kux TN x STN !y;H TFT ! 18.1 xr( TN STN TFT K 18.1TN STN TFT 2 emg .mİ +m m laU A 18.2.2 m e m p ! 29 +/

2、dev/fbn m Linux X Window m Qt/Embedded %+m 18.2.2 示 冲区与 示点m Jlmİ m e 18.2 18.4 ur( 16 8 F 16 Fo m e K 18.216 D9(2F 2:F 2:F 2:x */struct fb pixmap pixmap; /* Z mapper */struct fb pixmap sprite; /* _ mapper */struct fb cmap cmap; /* */struct list head mist;struct fbmode *mode; /* */ 14#ifdef CONFIG FB

3、 BACKLIGHT/* _ */struct backlight device *bl dev;18/* _ */struct mutex bl mutex;u8 bl curveFB BACKLIGHT LEVELS;#endif RGB565RGBRGB555RGBRGBBGR7 54 21 07 54 21 0RGB 31 2827 2423 207 43 0 0 x0 0 1 2 3 4 5 6 70 x04 8 9 10 11 12 13 14 15 LCD / 18FBI (mbR ;Jt m FBI 2 fb ops E4 FBI İ fbops Jt .tl f#918.2

4、=18.2fb_ops E4 12345678910111213141516171819202122232425struct fstruc/* /*/(*fb open)(struct fb info *info, (*fb release)(struct fb info *info,user);user);/* +/iJm */ssize t(*fb read)(struct file *file, char user *buf, size t count,loff t*p);ssize t(*fb write)(struct file *file, const char user *buf

5、, size t count,loff t *p);/* U*/(*fb check var)(struct fb var screeninfo *var, struct fb info *info);/* info-var */(*fb set par)(struct fb info *info);/* color */(*fb setcolreg)(unsigned regno, unsigned red, unsigned green, unsigned blue, unsigned transp, struct fb info *info);/* color */(*fb setcma

6、p)(struct fb cmap *cmap, struct fb info *info);445第章#ifdef CONFIG FB DEFERRED IOstruct delayed work deferred work;struct fb deferred io *fbdefio;#endifstruct fb ops *fbops; /* fb ops mJ */struct device *device; /* */struct device *dev;/* fb */class flag; /* sysfs */#ifdef CONFIG FB TILITTINGstruct f

7、b tile ops *tileops; /* Blitting */#endifchar iomem *screen base; /* */unsigned long screen size; /* ioremapped i */void *pseudo palette; /* C 16 */#define FBINFO SE RUNNING 0#define FBINFO SE SUSPENDED1u32 se; /* */void *fbcon par;void *par;41 ;Linux / !解（第 2 版）fb ops fb check var()İt+;S U fb set p

8、ar()yL 3 fb var screeninfo fb fix screeninfo E4 FBI fb var screeninfo fb fix screeninfo İ%H fb var screeninfo S u Z fb var screeninfo xres # yres # x bits pixel # fb fix screeninfo S m mJT 7 fb fix screeninfo m İ fb var screeninfo fb fix screeninfo H#u9 18.3 9 18.4 446/* */(*fb bl)(bl, struct fb inf

9、o *info); 28/* pan */(*fb pan display)(struct fb var screeninfo *var, struct fb info *info); 3132/* */33void(*fb fillrect)(struct fb info *info, const struct fb fillrect *rect);34/* */35void(*fb copyarea)(struct fb info *info, const struct fb copyarea *region);36/* */37void(*fb imageblit)(struct fb

10、info *info, const struct fb image *image); 3839/* _ */40(*fb cursor)(struct fb info *info, struct fb cursor *cursor); 41/* */void(*fb roe)(struct fb info *info,angle); 44/* blit () */(*fb sync)(struct fb info *info); 47/* fb ioctl () */(*fb ioctl)(struct fb info *info, unsignedcmd, unsigned long arg

11、); 50/* 32 F compat ioctl () */(*pat ioctl)(struct fb info *info, unsigned cmd, unsigned long arg); 5354/* fb mmap */55(*fb 56/* Q */void(*fb save se)(struct fb info *info); 59/* Q */void(*fb restore se)(struct fb info *info); 62void (*fb get caps)(struct fb info *info, struct fb blit caps *caps,str

12、uct fb var screeninfo *var);65 ;LCD / 1818.3fb_var_screeninfo E4 = =18.4fb_fix_screeninfo E4 447第章struct fb fix screeninfo char id16; /* */unsigned long smem start; /* fb miF */u32 smem len; /* fb m */u32 type; /* FB TYPE */u32 type aux; /*erleave */u32 visual; /* FB VISUAL */u16 xpanstep; /* pannin

13、g 0 */1 struct fb var screeninfo 2/* */u32 xres;u32 yres;5/* */u32 xres virtual;u32 yres virtual;/* $W */u32 xoffset;u32 yoffset; 11u32 bits per pixel; /* ZF BPP */u32 grayscale; / 0 */ 14/* fb RGB F */struct fb bitfield red;struct fb bitfield green;struct fb bitfield blue;struct fb bitfield transp;

14、 /*/ 2021u32 nonstd; /* != 0 pZ */2223u32 activate; 24u32 height; /* */u32 width; /* */ 2728u32 ac 29/* : ( pixclock f8;Z*/u32 pixclock; /* Z */u32 left margin; /* v 7$*/u32 right margin; /* v 7$*/u32 upper margin; /* v 7$ */u32 lower margin; /* v 7$ */u32 hsync len; /* */u32 vsync len; /* */u32 syn

15、c;u32 vmode;u32 roe; /* */ 41u325; /* Q */42 ;Linux / !解（ 第 2 版）9 18.4 7 visual L Linux q !Monochrome FB VISUAL MONO01 FB VISUAL MONO10 Z Pseudo color FB VISUAL PSEUDOCOLOR FB VISUAL SC IC PSEUDOCOLOR !True color FB VISUAL TRUECOLOR uİ Direct color FB VISUAL DIRECTCOLOR Z% İ U Grayscale displays U !

16、4 fb bitfield E4 9 18.3 16 17 18 u R G B F fb bitfield H Z m FW F MSB F 9 18.5 =8 18.5fb_bitfield E4 1 struct fb2 u323 u32 length; /* F*/4 u32 msb right; /*!=0: MSB */ 5 ;5 fb cm4 fb cmap HeR ; ioctl() FBIOGETCMAP FBIOPMAP : =8 18.6fb_cm4 9 18.7 M BPP 8 F y 256 BPP 4 F y 16 y 0 + BPP + 16 o L w 4481

17、 struct fb cmap 2u32 start; /* 1 a*/3u32 len; /* */4/* R G B */u16 *red;u16 *green;u16 *blue;u16 *transp; 9 ;u16 ypanstep;u16 ywrapstep;/u32 line length; /* 1 */unsigned long mmio start; /* i I/O F */u32 mmio len; /* i I/O */u32 accel;15u163; /* Q*/16 ;LCD / 18 =18.7;)ATJ WHK + 256PP=8 800 600 uZ u

18、y 800 600 3=1 440 000Byte L y 800 600 1+256 3=480768Byte 6 0 - J mJH#+/linux/drivers/vedio/fbmem.c 918.8 =18.8$F L 0 - E4 449第章sic struct file operations fb fops = .owner = THIS MODULE,.read = fb read,.write = fb write,.ioctl = fb ioctl,#ifdefPAT.compat ioctl =pat ioctl,#endif.mmap = fb mmap,.open =

19、 fb open,.release = fb release,#ifdef HAVE ARCH FB UNMAPPED AREA.get unmapped area = get fb unmapped area,#endif#ifdef CONFIG FB DEFERRED IO.fsync =fb deferred io fsync,#endif 18 ;1 /* a */if (vinfo.bits per pixel = 8) | (vinfo.bits per pixel = 4) screencols = (vinfo.bits per pixel = 8) ? 256 : 16;/

20、* */loopc;startcmap = new fb cmap;startcmap-start = 0;startcmap-len = screencols;/* ui */startcmap-red = (unsigned short*)malloc(sizeof(unsigned short)*screencols);startcmap-green = (unsigned short*)malloc(sizeof(unsigned short)*screencols);startcmap-blue = (unsigned short*)malloc(sizeof(unsigned sh

21、ort)*screencols);startcmap-transp = (unsigned short*)malloc(sizeof(unsigned short)*screencols);17/* */ioctl(fd, FBIOGETCMAP, startcmap);for (loopc = 0; loopc redloopc 8, startcmap-greenloopc 8, startcmap-blueloopc 8); 2223 Linux / !解（ 第 2 版）mJt fbmem.c kl 7 6 6R$F L Linux iN( register framebuffer()

22、unregister framebuffer()tujm t FBI + register framebuffer()t jm( FB MAX # 32 yt-ENXIO jİy 0 18.3 Linux m! mN file operations H fbmem.c file operations N m fb info Hj ;f İ f fb ops İtytAJ LCD fb.c fb ops İ 18.3 冲 / 的程序 mt İ 4 J 450 冲 / 的模 加$与卸$函数Linux 冲 / register framebuffer(struct fb info *fb info)

23、; unregister framebuffer(struct fb info *fb info);LCD 幍洀18申请 FBI 结构体的内存空间，初始化 FBI 结构体中固定和可变的屏幕参数，即填充 FBI中 fb_var_screeninfo var 和 struct fb_fix_screeninfo fix 成员。根据具体 LCD 屏幕的特点，完成 LCD 控制器硬件的初始化。申请帧缓冲设备的显示缓冲区空间。（4）帧缓冲设备。在帧缓冲设备驱动的模块卸载函数中，应该完成相反的工作，包括FBI 结构体内存、关闭 LCD、显示缓冲区以及注销帧缓冲设备。由于 LCD 控制器经常被集成在 SoC

24、 上作为一个独立的硬件模块而存在（成为 platform_device），因此，LCD 驱动中也经常包含驱动，这样，在帧缓冲设备驱动的模块加载函数中完成的工作只驱动，而初始化 FBI 结构体中的固定和可变参数、LCD 控制器硬件的初始化、申请帧缓是冲设备的显示缓冲区空间和帧缓冲设备的工作则移交到驱动的探测函数中完成。同样地，在使用驱动的情况下，FBI 结构体内存、关闭 LCD、显示缓冲区以及注销帧缓冲设备的工作也移交到驱动的移除函数中完成。代码18.9 所示为帧缓冲设备驱动的模块加载和卸载以及驱动的探测和移除函数中的模板。18.9帧缓冲设备驱动的模块加载/卸载及驱动的探测/移除函数的模板代码4

25、51第章/*驱动结构体 */sic struct platform_driverfb_driver = .probe =fb_probe,.remove =fb_remove,.suspend =fb_suspend,.resume =fb_resume,.drive.nabao.ow1011 ;12/*驱动探测函数 */sic_ _initfb_probe(.) 15 16struct fb_info *info;17/*分配 fb_info 结构体*/info = framebuffer_alloc(.); 20info-screen_base = framebuffer_virtual_

26、memory;info-var =fb_var; /* 可变参数 */info-fix =fb_fix; /* 固定参数 */ 24/*分配显示缓冲区*/alloc_dis_buffer(.); 27/*初始化 LCD 控制器*/lcd_init(.); 30/*检查可变参数*/fb_check_var(&info-var, info);Linux / !解（第 2 版） 9 35 47 İr register framebuffer() unregister framebuffer()u+jm a RAM u m h 18.4 18.4 在 RAM 中分配 示 冲区452 冲 示 冲区的申与

27、)放33/*j fb info*/if (register framebuffer(info) map_size = PAGE_ALIGN(fbi-fb-fix.smem_len + PAGE_SIZE);fbi-map_cpu =bine(fbi-dev, fbi-map_size,&fbi-map_dma,GFP_KERNEL); /* 分配内存 */ 67fbi-map_size = fbi-fb-fix.smem_len; /* 显示缓冲区大小 */8if (fbi-map_cpu) memset(fbi-map_cpu, 0 xf0, fbi-map_size); 11fbi-scr

28、een_dma = fbi-map_dma;fbi-fb-screen_base = fbi-map_cpu;fbi-fb-fix.smem_start = fbi-screen_dma; 151617retubao18 1920 sic inline voidfb_unmap_memory(struct s3c2410fb_info *fbi) 21 /*显示缓冲区 */bine(fbi-dev,fbi-map_size,fbi-map_cpu, fbi-map_dma); 24 Linux / !解（ 第 2 版） 18.5 LCD中定 参数示例18.6.2像素 *FBI var pixc

29、lock Z M 28.37516 MHz 1 Z 35242 ps u 640 480 640 E% V 272 Z (640+272)*35;r 31kHz 1/(32.141E-6 s) = 31.113E3 Hz 480 E% V49 Z (480+49)*32.141E-6 s = 17.002E-3 s;r 59kHz 1/(17.002E-3 s) = 58.815 Hz 59 18.6.3.色位域FBI var red green blue Fm en M + RGB565 18.4 red 5 F W 11 F green 6 F W 5 F blue 5 F W 0 F 4

30、54fbinfo-var.red.offset = 11;fbinfo-var.green.offset = 5;fbinfo-var.blue.offset = 0;fbinfo-var.transp.offset = 0;fbinfo-var.red.length = 5;fbinfo-var.green.length = 6;640*35.242E-9 s = 22.555E-6 s1/(28.37516E6 Hz) = 35.242E-9 sLCD / 18fbinfo-var.blue.length = 5;18.6.4固定参数FBI fix smem start mm smem l

31、en m m c smem len = max xres * max yres * max bpp mm = x * y * BPP FBI fp ops LmJt = LCD / fb check var()+ S U fb set par()y gHl LCD ;L LCD aJ + fb ops fb fillrect() fb copyarea() fb imageblit()İt L cfb fillrect() cfb copyarea() cfb imageblit() t cfb fillrect() t# drivers/cfbfillrect.c cfb copyarea(

32、) # drivers/cfbcopyarea.c cfb imageblit()# drivers/cfbimgblt.c fb ops fb setcolreg()İtC FB VISUAL TRUECOLOR FB VISUAL DIRECTCOLOR f918.11 =18.11fb_setcolreg() /53455第章sic id green,unsig 3 structfb info *fbi = info-par;unsignedval; 6switch (fbi-fb-fix.visual) case FB VISUAL TRUECOLOR:/* C */if (regno

33、 fb-pseudo palette; 12val = chan to field(red, &fbi-fb-var.red);val |= chan to field(green, &fbi-fb-var.green);val |= chan to field(blue, &fbi-fb-var.blue); 1617palregno = val;1819break; 20case FB VISUAL PSEUDOCOLOR:if (regno 0) &0 xf800); 冲 / 的 fb ops 成 函数Linux / !解（ 第 2 版） 9 10 regno Jti fbmem.c k

34、S Eu.t+; m 9 18.12 LCD Jlt9 79& 2 b =8 $F L X f path.dentry-d inode;fbidx = iminor(inode);struct fb info *info = registered fbfbidx;u32 *buffer, *dst;u32 iomem *src;c, i, cnt = 0, err = 0;unsigned long total size; 1213 .14buffer = kmalloc(count PAGE SIZE) ? PAGE SIZE : count,GFP KERNEL);if (!buffer)

35、return -ENOMEM; 1920 src = (u32 iomem *) (info-screen base + p);21if (info-fbops-fb sync)info-fbops-fb sync(info); 2425 while (count) LCD / 的#写、 mmap 和 ioctl 函数25val |= (green 5) &0 x07e0);26val |= (blue 11) &0 x001f); 27wri(val, TFTPAL(regno);schedule palette update(fbi, regno, val); 3031break; 32.

36、333435return 0; 36 LCD 幍洀18457第章c = (count PAGE_SIZE) ? PAGE_SIZE : count;dst = buffer;28for (i = c 2; i-; )29*dst+ = fb_readl(src+);30if (c & 3) 31u8 *dst8 = (u8 *) dst;32u8 iomem *src8 = (u8 iomem *) src; 3334for (i = c & 3; i-;)35*dst8+ = fb_readb(src8+); 3637src = (u32 iomem *) src8;3839if (copy

37、_to_user(buf, buffer, c) err = -EFAULT;break;4344*p+= c;buf += c;cnt += c;count -= c; 48 4950 kfree(buffer); 5152 return (err) ? err : cnt; 53 54sicfb_writebt caouont, loff_t *p) 57 unsigned long p = *p;struct inode *inode = file-f_path.dentry-d_inode;fbidx = iminor(inode);struct fb_info *info = reg

38、istered_fbfbidx;u32 *buffer, *src;u32 iomem *dst;c, i, cnt = 0, err = 0;unsigned long total_size; 6667 .68buffer = kmalloc(count PAGE_SIZE) ? PAGE_SIZE : count,GFP_KERNEL);if (!buffer)return -ENOMEM; 7374 dst = (u32 iomem *) (info-screen_base + p);75if (info-fbops-fb_sync)info-fbops-fb_sync(info); 7

39、8while (count) c = (count PAGE_SIZE) ? PAGE_SIZE : count;Linux / !解（第 2 版）file operation 7L;Jm ii f99 18.13 =8 18.13$F L X lock)releases(&info-lock) 5 fbidx = iminor(file-f path.dentry-d inode);struct fb info *info = registered fbfbidx;struct fb ops *fb = info-fbops;unsigned long off;unsigned long s

40、tart;u32 len; 12if (vma-vm pgoff ( 0UL PAGE SHIFT)return -EINVAL;off = vma-vm pgoff fb mmap) 81src = buffer; 82if (copy from user(src, buf, c) err = -EFAULT;break;868788for (i = c 2; i-; )89fb wri(*src+, dst+); 9091if (c & 3) 92u8 *src8 = (u8 *) src;93u8 iomem *dst8 = (u8 iomem *) dst; 9495for (i =

41、c & 3; i-; )96fb writeb(*src8+, dst8+); 9798dst = (u32 iomem *) dst8;99100101*p+= c;buf += c;cnt += c;count -= c;105 106107 kfree(buffer); 108109 return (cnt) ? cnt : err;110 LCD 幍洀18fb_ioctl()函数最终实现对用户 I/O 控制命令的执行，这些命令包括 FBIOGET_VSCREENINFO（获得可变的屏幕参数）、FBIOPUT_VSCREENINFO（设置可变的屏幕参数）、FBIOGET _FSCREEN

42、INFO（获得固定的屏幕参数设置，注意，固定的屏幕参数不能由用户设置）、FBIOPMAP（设置颜色表）、FBIOGETCMAP（获得颜色表）等。代码数的源代码。18.14 所示为帧缓冲设备 ioctl()函代码18.14帧缓冲设备驱动的 ioctl 函数459第章long do_fb_ioctl(struct fb_info *info, unsignedcmd,unsigned long arg) 3 struct fb_ops *fb;struct fb_var_screeninfo var;struct fb_fix_screeninfo fix;struct fb_con2fbmap

43、con2fb;struct fb_cmap_user cmap;struct fb_event event;res;mutex_lock(&info-lock);res = fb-fb_mmap(info, vma);mutex_unlock(&info-lock);return res; 24 2526 mutex_lock(&info-lock); 27/* 帧缓冲区内存 */start = info-fix.smem_start;len = PAGE_ALIGN(start & PAGE_MASK) + info-fix.smem_len);if (off = len) /* 内存的 I

44、O */off -= len;if (info-var.accel_flags) mutex_unlock(&info-lock);return -EINVAL; 37start = info-fix.mmio_start;len = PAGE_ALIGN(start & PAGE_MASK) + info-fix.mmio_len); 40 mutex_unlock(&info-lock);start &= PAGE_MASK;if (vma-vm_end - vma-vm_start + off) len)return -EINVAL;off += start;vma-vm_pgoff =

45、 off PAGE_SHIFT;/* 这是一个 I/O 告诉 maydump 跳过此 VMA */49 fb_pgprbao48 vma-vmif (io_remap_pfn_range(vma, vma-vm_start, off PAGE_SHIFT,vma-vm_end - vma-vm_start, vma-vm_page_prot)return -EAGAIN;return 0; 54 Linux / !解（第 2 版）460void user *argp = (void user *)arg;long ret = 0; 12fb = info-fbops;if (!fb)retur

46、n -ENODEV; 16switch (cmd) case FBIOGET VSCREENINFO:ret = copy to user(argp, &info-var,sizeof(var) ? -EFAULT : 0;break;case FBIOPUT VSCREENINFO:if (copy from user(&var, argp, sizeof(var) ret = -EFAULT;break;26acquire console sem();info-flags |= FBINFO MISC USEREVENT;ret = fb set var(info, &var);info-

47、flags &= FBINFO MISC USEREVENT;release console sem();if (ret = 0 & copy to user(argp, &var, sizeof(var)ret = -EFAULT;break;case FBIOGET FSCREENINFO:ret = copy to user(argp, &info-fix,sizeof(fix) ? -EFAULT : 0;break;case FBIifbao41elseret = fb set user cmap(&cmap, info);break;case FBIOGETCMAP:if (cop

48、y from user(&cmap, argp, sizeof(cmap)ret = -EFAULT;elseret = fb cmap to user(&info-cmap, &cmap);break; 51 .default:if (fb-fb ioctl = NULL)ret = -ENOTTY;elseret = fb-fb ioctl(info, cmd, arg); 57 58 return ret; 59 60sic long fb ioctl(struct file *file, unsignedcmd, unsigned long arg)acquires(&info-loc

49、k)releases(&info-lock) 64 LCD / 18/dev/fbn mJ! q !/l dev/fbn +/lm M cp /dev/fb0 tmp :i : cp tmp /dev/fb0 y tmp !J +m mmap()Jm $;/l m ( ; m Lm J !I/O +m ioctl()J/ 18.6 J/dev/fbn 1 /dev/fbn 2 ioctl()J u ZW m ! ! ! 3 m 18.6 用 空, + 冲 流程 4 9;/lm ( 18.15 mmM em İ BPP mm =18.15;)AT$F L 2F I 461第章#include #

50、include #include #include #include #include 冲 的用 空, +struct inode *inode = file-f path.dentry-d inode;fbidx = iminor(inode);struct fb info *info;long ret; 69info = registered fbfbidx;mutex lock(&info-lock);ret = do fb ioctl(info, cmd, arg);mutex unlock(&info-lock);return ret; 75 Linux / !解（第 2 版）462

51、main()fbfd = 0;struct fb var screeninfo vinfo; unsigned long screensize = 0; char *fbp = 0;x = 0, y = 0;i = 0;/ Open the file for reading and writing fbfd = open(/dev/fb0, O RDWR);if (!fbfd) prf(Error: cannot open framebuffer device.n); exit(1);prf(The framebuffer device was opened sucsfully.n);/ Ge

52、t variable screen informationif (ioctl(fbfd, FBIOGET VSCREENINFO, &vinfo) prf(Error reading variable information.n); exit(1);prf(%dx%d, %dbppn, vinfo.xres, vinfo.yres, vinfo.bits pixel); if (vinfo.bits pixel != 16) prf(Error: not supported bits pixel, it only supports 16 bit colorn); exit(1);/ Figur

53、screensibao/ Map the device to memoryfbp = (char *)mmap(0, screensize, PROT READ | PROT WRITE, MAP SHARED, fbfd, 0);if ()fbp = -1) prf(Error: failed to map framebuffer device to memory.n); exit(4);prf(The framebuffer device was mapped to memory sucsfully.n);/ Draw 3 rect with graduated RED/GREEN/BLU

54、E for (i = 0; i 3; i+) for (y = i * (vinfo.yres / 3); y (i + 1) * (vinfo.yres / 3); y+) for (x = 0; x İ( fb test ; 18.10.1Qt-X11/QtEmbedded/QtopiaQt Trolltech - c FrameWork D C+ Windows MacOS X Linux Solaris HP-UX Tru64 (DigitalUNIX) Irix FreeBSD BSD/OS SCO AIX Trolltech % Qt/Embedded X Server 18.7

55、Qt/Embedded N( Widgets ; N3 + Qt X Window ;P Qt/Embedded Qtopia Qt/Embedded 9 0D PDA SmartPhoneLinux Trolltech ( N Qtopia Greenphone L Linux ! qvfb m m qvfb X Qtopia L(d1 m m m 18.7Qt/Embedded 与 Qt 的区 f Qt R Signal Slot Qt +R +Bt R Qt Qt +f8 R p C+ C+ . g463第章 Qt APIQt/EmbeddedQt/X11Qt/XlibX Window

56、Server Linux 形用 界面rgb = (r 11) | (g AR M sA clicked R t X connect()t R İ( )9 R $, ;r9 M r clicked()R( rt quit() srL İ 9 connect( button, SIGNAL(clicked(), qApp, SLOT(quit() );9 18.16 z o o World ( Qtimer M ; 7 =8 18.16Qt/Embedded ;&I 4641/*2* ; o.h 93*/#ifndefO H#defineO H#include #include class QVB

57、oxLayout;class QHBoxLayout;class QGridLayout;classo: public QWidget 12QbaoWFlags fl = 0);15o();16/; 9signals: void clicked();protected:void mouseReleaseEvent(QMouseEvent*);void paEvent(QPaEvent*);private slots: void animate();private:QString t;b;25;26#endif /O H 2728 /*29* ; o.cpp 930*/#include o.h#

58、include #include #include #include #include #include LCD 幍洀18465第章#include #include /* 构造一个o 窗口 */o:o(QWidget *parent, const char *name, WFlags fl): QWidget(parent,name, fl) 43 if (!name)setName(o); 46resize(240, 320);setMinimumSize(QSize(240, 320);setumSize(QSize(240, 320);setSizeIncrement(QSize(24

59、0, 320);setBaseSize(QSize(240, 320);QPalette pal;QColroup cg;cg.setColor(QColroup:Foreground, black);cg.setColor(QColroup:Button, QColor(192, 192, 192);cg.setColor(QColroup:Light, white);cg.setColor(QColroup:Midlight, QColor(223, 223, 223);cg.setColor(QColroup:Dark, QColor(96, 96, 96);cg.setColor(QC

60、olroup:Mid, QColor(128, 128, 128);cg.setColor(QColroup:Text, black);cg.setColor(QColroup:BrightText, white);cg.setColor(QColroup:ButtonText, black);cg.setColor(QColroup:Base, white);cg.setColor(QColroup:Background, white);cg.setColor(QColroup:Shadow, black);cg.setColor(QColroup:Highlight, black);cg.