why

520QAQ

1. //鼠标控制
   
2. #include <dos.h>
   
3. #include <bios.h>
   
4. #include <malloc.h>
   
5. #include <stdlib.h>
   
6. #include <stdio.h>
   
7. #include "graphics.h"
   
8. 
   
9. #define R 15
   
10. 
    
11. void initgr(void)
    
12. {
    
13. int gd = DETECT, gm = 0;
    
14. initgraph(&gd, &gm, "D://TC20//BGI");
    
15. }
    
16. 
    
17. void getmouse(int *x,int *y,int *key)
    
18. {
    
19. union REGS inregs,outregs;
    
20. inregs.x.ax=3;
    
21. int86(0x33,&inregs,&outregs);
    
22. *x=outregs.x.cx;
    
23. *y=outregs.x.dx;
    
24. *key=outregs.x.bx;
    
25. }
    
26. void visbilemouse()
    
27. {
    
28. union REGS inregs,outregs;
    
29. inregs.x.ax=0x01;
    
30. int86(0x33,&inregs,&outregs);
    
31. }
    
32. 
    
33. void mouse(int *x,int *y,int *z)
    
34. {
    
35. int a=0,b=0,c=0,a_old=0,b_old=0;
    
36. int *ball;
    
37. ball=malloc(imagesize(a,b,a+R,b+R));
    
38. getimage(a,b,a+R,b+R,ball);
    
39. 
    
40. while(c==0)
    
41. {
    
42. getmouse(&a,&b,&c);
    
43. if(a<0) a=0;
    
44. if(b<0) b=0;
    
45. if(a>getmaxx()-R) a=getmaxx()-R;
    
46. if(b>getmaxy()-R) b=getmaxy()-R;
    
47. if(a!=a_old || b!=b_old)
    
48. {
    
49. putimage(a_old,b_old,ball,0);
    
50. getimage(a,b,a+R,b+R,ball);
    
51. 
    
52. setcolor(GREEN);
    
53. setlinestyle(0,0,1);
    
54. line(a,b,a+R,b+R/2);
    
55. line(a,b,a+R/2,b+R);
    
56. line(a+R,b+R/2,a+R/2,b+R);
    
57. line(a+R*3/4,b+R*3/4,a+R,b+R);
    
58. }
    
59. a_old=a;b_old=b;
    
60. }
    
61. *x=a;*y=b;*z=c;
    
62. putimage(a,b,ball,0);
    
63. free(ball);
    
64. }
    
65. 
    
66. void main()
    
67. {
    
68. int x,y,z;
    
69. initgr();
    
70. visbilemouse();
    
71. do
    
72. {
    
73. setcolor(WHITE);
    
74. rectangle(175,8,220,25);
    
75. outtextxy(180,10,"exit");
    
76. mouse(&x,&y,&z);
    
77. if(z==1)
    
78. {
    
79. setlinestyle(0,0,1);
    
80. setcolor(12);
    
81. circle(x,y,1);
    
82. }
    
83. if(z==2)
    
84. {setfillstyle(1,BLACK);
    
85. bar(0,0,getmaxx(),getmaxy());
    
86. }
    
87. }while(x<175 || x>220 || y<8 || y>25);
    
88. closegraph();
    
89. }
    

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这个是在TC上才能编译通过的，啊哈C没办法编译