InstallShield学习笔记三:脚本(2)

5.设置安装模式

InstallScript MSI不足:

在InstallScript MSI中,在OnFirstUIBefore()执行完成后,即安装完成,这个时候需要做后续的操作,如写注册表等,这些操作要在OnFirstUIAfter()中执行。

如果此时点击取消,然后在此安装时,InstallShield会提示先卸载之前的安装,这个体验非常不好,而且InstallScript MSI还没有办法修改。

 

而在InstallScript 提供了一个逻辑条件,即OnShowUI(),这个可以自己修改安装模式,代码如下

function OnShowUI()
BOOL    bMaintenanceMode, bUpdateMode;
string    szIgnore, szTitle;
begin
        
        // Enable dialog caching
        Enable( DIALOGCACHE );
        
        // Determine what events to show.
        bUpdateMode    = FALSE;
        bMaintenanceMode = FALSE;
    
        // Remove this to disabled update mode.
        if( UPDATEMODE ) then
            bUpdateMode = TRUE;
        endif;

        // Remove this to disable maintenance mode.
        if ( MAINTENANCE ) then
            bMaintenanceMode = TRUE;
        endif;

        // Show appropriate UI

        // TODO: Enable if you want to enable background etc.
        //if ( LoadStringFromStringTable( "TITLE_MAIN", szTitle ) < ISERR_SUCCESS ) then // Load the title string.
        //    szTitle = IFX_SETUP_TITLE;
        //endif;
        //SetTitle( szTitle, 24, WHITE );
        //Enable( FULLWINDOWMODE );                           
        //Enable( BACKGROUND );
        //SetColor( BACKGROUND, RGB( 0, 128, 128 ) );

        if( bUpdateMode ) then
            OnUpdateUIBefore();
        else
            if ( bMaintenanceMode ) then
                OnMaintUIBefore();
            else
                OnFirstUIBefore();
            endif;
        endif;

        // Move Data
        OnMoveData(); // 这里可以安装,也可以卸载组件
        

if( bUpdateMode ) then OnUpdateUIAfter(); else if ( bMaintenanceMode ) then OnMaintUIAfter(); else OnFirstUIAfter(); endif; endif; // Disable dialog caching Disable(DIALOGCACHE); end;

分析:

(1)可以看到可以显示有3中模式:OnUpdateUIBefore,OnMaintUIBefore,OnFirstUIBefore(对应有After),分别表示升级,维护(卸载,重安装),首次安装。

(2)OnMoveData()。这个是整个方法最重要的部分,表示数据安装或者卸载。具体使用会在后面分析。

如果我们不需要用户升级,可以将OnUpdateUIBefore()替换为OnFirstUIBefore(),OnUpdateUIAfter()替换为OnFirstUIAfter()不要删除,替换即可。修改后,即使用户安装中途取消,再次运行安装程序时,也是首次安装的状态(表现为:如果在在安装包中选择弹出语言选择框,此时这个语言选择框也会弹出。。)

 

6.在卸载组件中OnMoveData()的使用

在第5点中展示了使用OnMoveData,这里要说下使用过程中要注意到东西。

代码:

function OnMoveData()
number    nResult, nMediaFlags;
begin

    // Don't install the DISK1COMPONENT if MAINT_OPTION_NONE was specified.
    if( MAINT_OPTION = MAINT_OPTION_NONE ) then
        FeatureSelectItem( MEDIA, DISK1COMPONENT, FALSE );
    endif;

    // Updated in 11.5, disable the cancel button during file transfer unless
    // this is non-maintenance mode or repair mode.
    if( MAINTENANCE && ( !REINSTALLMODE || UPDATEMODE ) ) then
        Disable( CANCELBUTTON );
    endif;

    // Show Status
    // Note: Start status window at 1 in case CreateInstallationInfo call
    // is lengthy.
    SetStatusWindow( 1, "" );
    Enable( STATUSEX );
    StatusUpdate( ON, 100 );

    // Create the uninstall infomation (after displaying the progress dialog)
    // Don't create uninstall information if MAINT_OPTION_NONE was specified.
    if( MAINT_OPTION != MAINT_OPTION_NONE ) then
        CreateInstallationInfo();
    endif;

    // Move Data
    nResult = FeatureTransferData( MEDIA );
    
    // Moved in 11.0, Check for failure before creating uninstall key.
    // Handle move data error and abort if error occured.
    if( nResult < ISERR_SUCCESS ) then
        OnComponentError();
        abort;
    endif;        

    // Create uninstall key, if DISK1COMPONENT was installed.
    if( IFX_DISK1INSTALLED ) then

        // Store text-subs for maintenance mode later, only do this when
        // disk 1 is installed. Note that any text-subs that are updated after
        // this call will not be remembered during maintenance mode.
        FeatureSaveTarget("");

        // Write uninstall information.
        MaintenanceStart();

        // Customize Uninstall Information
        OnCustomizeUninstInfo();

    endif;

    // Disable Status
    Disable( STATUSEX );

end;

这里最重要的是FeatureTransferData(MEDIA)这个使用。

这个方法可以查看帮助文档,安装和卸载时是不一样的。

安装:Installs features that are selected(安装只勾选的组件Feature)

卸载:Uninstalls features that are not selected and are currently installed(卸载不勾选的组件Feature)。

问题来了:

在卸载时,即调用OnMaintUIBefore()的时候,调用的是nResult = SdFeatureTree( szTitle, szMsg, TARGETDIR, "", -1 );

这样会出现的一个现象是:在卸载的时候,勾选的组件卸载不掉,不勾选的反而卸载了(这个根本原因是组件重新安装)。

(这里只贴上OnMaintUIBefore()部分代码)

Dlg_SdFeatureTree:
    if ( nType = MODIFY ) then
        szTitle = "";
        szMsg = SdLoadString( SD_STR_COMPONENT_MAINT_MSG );
        nResult = SdFeatureTree( szTitle, szMsg, TARGETDIR, "", -1 );
        if ( nResult = BACK ) goto Dlg_Start;
    endif;

 解决办法:反选组件。

使用FeatureSelectItem()来控制。思路是:如果只卸载Feature1,后台设置Feature1为不勾选状态,而将Featreu2设置为勾选状态;Feature2同理。

示例代码如下:

function OnMoveData()
number    nResult, nMediaFlags;
begin

    …………
// Show Status
    // Note: Start status window at 1 in case CreateInstallationInfo call
    // is lengthy.
    SetStatusWindow( 1, "" );
    Enable( STATUSEX );
    StatusUpdate( ON, 100 );

    // Create the uninstall infomation (after displaying the progress dialog)
    // Don't create uninstall information if MAINT_OPTION_NONE was specified.
    if( MAINT_OPTION != MAINT_OPTION_NONE ) then
        CreateInstallationInfo();
    endif;
    
      // 只有卸载时才需要这样配置,安装不需要
    if(REMOVEONLY) then
      // 只卸载Feature1,将Feature1设置为不选状态,将Feature2设置为选中状态
       if(bSelectFeature1 && !bSelectFeature2) then 
      FeatureSelectItem(MEDIA,
"DefaultFeature\\NewFeature2", TRUE);   FeatureSelectItem(MEDIA, "DefaultFeature\\NewFeature1", FALSE);
    // 只卸载Feature2,将Feature2设置为不选状态,将Feature1设置为选中状态   elseif (bSelectFeature2 && !bSelectFeature1) then
      FeatureSelectItem(MEDIA,
"DefaultFeature\\NewFeature1", TRUE);   FeatureSelectItem(MEDIA, "DefaultFeature\\NewFeature2", FALSE);   endif; endif; // Move Data nResult = FeatureTransferData( MEDIA ); // Moved in 11.0, Check for failure before creating uninstall key. // Handle move data error and abort if error occured. if( nResult < ISERR_SUCCESS ) then OnComponentError(); abort; endif; ………… end;

 

7.运行第三方程序

在InstallShield中,提供给调用exe,bat等文件。

LaunchAppAndWait ( szProgram, szCmdLine, nOptions );

代码示例:

function OnFirstUIAfter()
    STRING szTitle, szMsg1, szMsg2, szOpt1, szOpt2;
    NUMBER bvOpt1, bvOpt2;
    STRING szProgram, szCmd;
begin

    ShowObjWizardPages(NEXT);
    
    szTitle = "";
    szMsg1 = ""; 
    szMsg2 = "";
    szOpt1 = "";
    szOpt2 = "";
    bvOpt1   = FALSE;
    bvOpt2   = FALSE;    
    
    szProgram = WINDIR ^ "System32\\PING.exe";
     // szProgram = SUPPORTDIR ^ "test.bat"; // 如果使用自定义的bat,需要在Support Files/Billboards中存入bat文件
    szCmd = "www.baidu.com";
    
    LaunchAppAndWait (szProgram, szCmd, LAAW_OPTION_NOWAIT|LAAW_OPTION_HIDDEN);
    nResult = LAAW_PARAMETERS.nLaunchResult;    
    
    //{{IS_SCRIPT_TAG(Dlg_SdDinishEx)    
    if ( BATCH_INSTALL ) then
        SdFinishReboot ( szTitle , szMsg1 , SYS_BOOTMACHINE , szMsg2 , 0 );
    else
        SdFinish ( szTitle , szMsg1 , szMsg2 , szOpt1 , szOpt2 , bvOpt1 , bvOpt2 );
    endif;
    //}}IS_SCRIPT_TAG(Dlg_SdDinishEx)    
end;

这里基本上展示了LaunchAppAndWait 的用法,重点记录的是获取返回值,这个值在bat中通过使用exit()获取返回值,如exit(-1)。

 

8.取消安装提示信息修改

在安装和卸载过程中,如果点击取消,此时会发现弹出的信息一模一样,默认是显示取消安装的信息。试想,在取消卸载时,提示这样的信息会让用户一头雾水。

这时候需要修改取消过程中的信息,修改OnCanceling()

原始代码:

function OnCanceling()
    STRING szTitle, szMsg1, szMsg2, szOpt1, szOpt2;
    NUMBER bvOpt1, bvOpt2;
begin
    if (IDYES = SprintfBox(MB_YESNO|MB_ICONEXCLAMATION|MB_DEFBUTTON2, SdLoadString(SD_STR_ONCANCELING_TITLE), SdLoadString(SD_STR_ONCANCELING_CONFIRM_MSG))) then
        //Close the current dialog.
        EndCurrentDialog();
        //Display Finish dialog.
        szTitle = "";    
        szMsg1 = SdLoadString( SD_STR_ONCANCELING_FINISH_MSG1 );
        szMsg2 = SdLoadString( SD_STR_ONCANCELING_FINISH_MSG2 );    
        szOpt1 = "";
        szOpt2 = "";
        bvOpt1   = FALSE;
        bvOpt2   = FALSE;
        SdFinish ( szTitle, szMsg1, szMsg2 , szOpt1, szOpt2, bvOpt1, bvOpt2 );                       
        
        abort;
    endif;
end;

修改后的代码:

技巧:这里使用“@”可以获取资源文件中的信息。

修改后代码:

function OnCanceling()
    STRING szTitle, szMsg1, szMsg2, szOpt1, szOpt2;
    NUMBER bvOpt1, bvOpt2;
    STRING szBoxTitle, szBooxMsg;
begin

    if(MAINTENANCE) then
        szBoxTitle = SdLoadString(SD_STR_ONCANCELING_TITLE);
        szBooxMsg = SdLoadString(SD_STR_ONCANCELING_CONFIRM_MSG);
        
        // 这个与弹出框没有关系,这里呈现的地方是退出向导页面,默认是安装完成
        szMsg1 = SdLoadString( SD_STR_ONCANCELING_FINISH_MSG1 ); 
        szMsg2 = SdLoadString( SD_STR_ONCANCELING_FINISH_MSG2 );   
    else
        szBoxTitle = @UNINSTALL_BOX_TITLE;
        szBooxMsg = @UNINSTALL_BOX_MSG;
        
        // 这个与弹出框没有关系,这里呈现的地方是退出向导页面
        szMsg1 = @UNINSTALL_TITLE;
        szMsg2 = @UNINSTALL_MSG;
    endif;
        

    if (IDYES = SprintfBox(MB_YESNO|MB_ICONEXCLAMATION|MB_DEFBUTTON2, szBoxTitle, szBooxMsg)) then
        //Close the current dialog.
        EndCurrentDialog();
        //Display Finish dialog.
        szTitle = "";  
        szOpt1 = "";
        szOpt2 = "";
        bvOpt1   = FALSE;
        bvOpt2   = FALSE;
        SdFinish ( szTitle, szMsg1, szMsg2 , szOpt1, szOpt2, bvOpt1, bvOpt2 );                       
        
        abort;
    endif;
end;

效果:

image  image

posted on 2014-09-11 00:09  winlrou  阅读(1853)  评论(0编辑  收藏  举报