reactos操作系统实现(61)

前面准备好文件后，就需要从光盘里拷贝文件到安装目录，下面就是这个过程的界面：

实现这个过程的代码如下：

#001  static

#002  PAGE_NUMBER

#003  FileCopyPage(PINPUT_RECORD Ir)

#004  {

#005      COPYCONTEXT CopyContext;

#006 

 

显示拷贝文件的标题。

#007      MUIDisplayPage(FILE_COPY_PAGE);

#008 

 

创建一个拷贝文件的环境结构。

#009      /* Create context for the copy process */

#010      CopyContext.DestinationRootPath = DestinationRootPath.Buffer;

#011      CopyContext.InstallPath = InstallPath.Buffer;

#012      CopyContext.TotalOperations = 0;

#013      CopyContext.CompletedOperations = 0;

#014 

 

创建显示拷贝文件进度条。

#015      /* Create the progress bar as well */

#016      CopyContext.ProgressBar = CreateProgressBar(13,

#017                                                  26,

#018                                                  xScreen - 13,

#019                                                  yScreen - 20,

#020                                                  10,

#021                                                  24,

#022                                                  TRUE,

#023                                                  MUIGetString(STRING_SETUPCOPYINGFILES));

#024 

#025      // fit memory bars to screen width, distribute them uniform

#026      unsigned int mem_bar_width = (xScreen - 26) / 5;

#027      mem_bar_width -= mem_bar_width % 2;  // make even

#028      /* ATTENTION: The following progress bars are debug stuff, which should not be translated!! */

 

创建分页内存使用情况的柱条。

#029      /* Create the paged pool progress bar */

#030      CopyContext.MemoryBars[0] = CreateProgressBar(13,

#031                                                    40,

#032                                            13 + mem_bar_width,

#033                                                    43,

#034                                            13,

#035                                                    44,

#036                                                    FALSE,

#037                                                    "Paged Memory");

#038 

 

创建非分页内存使用情况的柱条。

#039      /* Create the non paged pool progress bar */

#040      CopyContext.MemoryBars[1] = CreateProgressBar((xScreen / 2)- (mem_bar_width / 2),

#041                                                    40,

#042                                            (xScreen / 2) + (mem_bar_width / 2),

#043                                                    43,

#044                                                    (xScreen / 2)- (mem_bar_width / 2),

#045                                                    44,

#046                                                    FALSE,

#047                                                    "Nonpaged Memory");

#048 

 

创建全局内存使用情况的柱条。

#049      /* Create the global memory progress bar */

#050      CopyContext.MemoryBars[2] = CreateProgressBar(xScreen - 13 - mem_bar_width,

#051                                                    40,

#052                                            xScreen - 13,

#053                                                    43,

#054                                            xScreen - 13 - mem_bar_width,

#055                                                    44,

#056                                                    FALSE,

#057                                                    "Free Memory");

#058 

 

调用函数SetupCommitFileQueueW来进行所有文件拷贝。

#059      /* Do the file copying */

#060      SetupCommitFileQueueW(NULL,

#061                            SetupFileQueue,

#062                            FileCopyCallback,

#063                            &CopyContext);

#064 

 

已经完成文件拷贝，删除分配的资源。

#065      /* If we get here, we're done, so cleanup the queue and progress bar */

#066      SetupCloseFileQueue(SetupFileQueue);

#067      DestroyProgressBar(CopyContext.ProgressBar);

#068      DestroyProgressBar(CopyContext.MemoryBars[0]);

#069      DestroyProgressBar(CopyContext.MemoryBars[1]);

#070      DestroyProgressBar(CopyContext.MemoryBars[2]);

#071 

#072      /* Go display the next page */

#073      return REGISTRY_PAGE;

#074  }