这里介绍一下FolderTreeView 类。

TFolderTreeView = class(TCustomFolderTreeView)
  property OnChange: TNotifyEvent; read write;
  property OnRename: TFolderRenameEvent; read write;
end;
而TCustomFolderTreeView又继承自TWinControl,所以和其他基本控件一样具有许多类似的属性,此处不再重复。
贴出代码段:

[code]

var
myPage:TWizardPage;
  ftv: TFolderTreeView;
 
procedure InitializeWizard();
begin
    myPage:=CreateCustomPage(wpWelcome, '标题:自定义页面', '描述:这是我的自定义页面');
    ftv := TFolderTreeView.Create(myPage);
    ftv.Width := myPage.SurfaceWidth;
    ftv.Height := myPage.SurfaceHeight;
    ftv.Parent := myPage.Surface;
    ftv.Directory := ExpandConstant('{win}');
end;
有必要对 ExpandConstant进行解释一下。该函数的原型为:
function ExpandConstant(const S: String): String;
描述为:Changes all constants in S to their values. For example, ExpandConstant('{srcexe}') is changed to the filename of Setup.An exception will be raised if there was an error expanding the constants.
即将字符串常量展开为所对于的路径字符串。常用的常量有{app}、{win}、{sys}、{src}、{dotnet20}等,避免了手动输入的麻烦。
运行效果如下:

Inno Setup入门(二十四)——Inno Setup类参考(10)-LMLPHP
另外,该类支持一个OnChange的事件,当文件夹被修改时触发。

[code]
var
myPage:TWizardPage;
  ftv: TFolderTreeView;
lbl: TLabel;
 
procedure ChangeDir(Sender: TObject);
begin
  lbl.Caption:=ftv.Directory;
end;
 
procedure InitializeWizard();
begin
    myPage:=CreateCustomPage(wpWelcome, '标题:自定义页面', '描述:这是我的自定义页面');
    lbl:=TLabel.Create(myPage);
    lbl.Parent:=myPage.Surface;
    
    ftv := TFolderTreeView.Create(myPage);
    ftv.Top:=lbl.Height+5;
    ftv.Width := myPage.SurfaceWidth;
    ftv.Height := myPage.SurfaceHeight-20;
    ftv.Parent := myPage.Surface;
    ftv.Directory := ExpandConstant('{win}');
    ftv.OnChange:=@ChangeDir;
    lbl.Caption:=ftv.Directory;   
end;
这次运行的效果如下:

Inno Setup入门(二十四)——Inno Setup类参考(10)-LMLPHP

可见标签的值和文件夹的值保持一致。

05-11 08:16