Qt在Linux環境下讀取和設置系統時間

環境：

主機:Fedora 12

開發軟件：QT

讀取系統時間

[cpp]

1. void moreidDialog::refresh_time()
2. {
3. QDateTime time;
4. txt_time->setText(time.currentDateTime().toString("yyyy") + "." + \
5. time.currentDateTime().toString("M") + "." + \
6. time.currentDateTime().toString("d") + "." + \
7. time.currentDateTime().toString("h") + "." + \
8. time.currentDateTime().toString("m"));
9. }

讀取到分，時間間隔用"."，最終讀取並顯示的效果：2011.12.27.9.14
設置系統時間 [cpp]

1. //保存時間鍵
2. void moreidDialog::slot_save_time_key()
3. {
4. QDateTime time;
5. QString str = txt_time->text();
6. //判斷格式是否正確
7. if (str.count(".") != 4)
8. {
9. txt_time->setText(tr("ge shi cuo wu"));
10. return;
11. }
12. int i = 0,j = 0;
13. i = str.indexOf(".");
14. QString year = str.mid(0,i);
15. j = str.indexOf(".",i + 1);
16. QString month = str.mid(i + 1,j - i - 1);
17. i = j;
18. j = str.indexOf(".",i + 1);
19. QString day = str.mid(i + 1,j - i - 1);
20. i = j;
21. j = str.indexOf(".",i + 1);
22. QString hour = str.mid(i + 1,j - i - 1);
23. i = j;
24. j = str.indexOf(".",i + 1);
25. QString min = str.mid(i + 1,j - i - 1);
26. bool ok = false;
27. year.toInt(&ok);
28. if (ok == false)
29. {
30. txt_time->setText(tr("ge shi cuo wu"));
31. return;
32. }
33. month.toInt(&ok);
34. if (ok == false)
35. {
36. txt_time->setText(tr("ge shi cuo wu"));
37. return;
38. }
39. day.toInt(&ok);
40. if (ok == false)
41. {
42. txt_time->setText(tr("ge shi cuo wu"));
43. return;
44. }
45. hour.toInt(&ok);
46. if (ok == false)
47. {
48. txt_time->setText(tr("ge shi cuo wu"));
49. return;
50. }
51. min.toInt(&ok);
52. if (ok == false)
53. {
54. txt_time->setText(tr("ge shi cuo wu"));
55. return;
56. }
57. str = "date -s " + month + "/" + day + "/" + year;
58. system(str.toLatin1().data());
59. str = "date -s " + hour + ":" + min + ":" + "00";
60. system(str.toLatin1().data());
61. //強制寫入到CMOS
62. system("clock -w");
63. }

同步系統時鐘與硬件時鐘時間命令: 硬件時鐘同步到系統時鐘:hwclock --hctosys 系統時鐘同步到硬件時鐘:hwclock -systohc