Inno Setup入门(二十四)——Inno Setup类参考(10)
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]贴出代码段:
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:
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) - Castor - 趁年轻,多折腾](http://image59.360doc.com/DownloadImg/2013/03/2714/31227697_1.jpg)
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:
可见标签的值和文件夹的值保持一致。
这次运行的效果如下:
![Inno Setup入门(二十四)——Inno Setup类参考(10) - Castor - 趁年轻,多折腾](http://image59.360doc.com/DownloadImg/2013/03/2714/31227697_2.jpg)
转自:http://www.360doc.com/content/13/0327/14/4221543_274238588.shtml