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使用 IntraWeb (21) - 基本控件之 TIWTabControl

2024-07-08 14:48:03   214人阅读


TIWTabControl 包含的是 TIWTabPage; 设计时通过右键菜单 Add Page 添加(再给页面添加东西时一定要先选定页面); 下面例子是动态添加的.

TIWTabControl 所在单元及继承链:
IWCompTabControl.TIWTabControl < TIWCustomRegion < TIWHTML40Container < TIWHTMLContainer < TIWContainer < TIWBaseContainer < TScrollingWinControl < TWinControl < TControl < TComponent < TPersistent < TObject

主要成员:
property Pages: TList //TIWTabPage 对象的集合; 但它是 TList 类型, 使用前需转换下property ActiveTabFont: TIWFont     //当前 Tab 标签的字体property ActiveTabColor: TIWColor   //当前 Tab 标签的背景色property InactiveTabFont: TIWFont   //其他 Tab 标签的字体property InactiveTabColor: TIWColor //其他 Tab 标签的背景色property ActivePage: Integer //当前页号; 如果需要设置它将导致提交, 官方给出了通过 js 进行本地设置的方法: IWTABCONTROL1.tabPane.setSelectedIndex(i);property BorderOptions: TIWContainerBorderOptions //它的边框选项还是比较复杂的, 个人觉得: 如果需要边框还不如套个 TIWRegionproperty LayoutMgr: TIWContainerLayout  //布局管理器, 它也可以用模板(它是从 TIWCustomRegion 继承的)property Color: TIWColor  //property OnChange: TNotifyEvent       //property OnAsyncChange: TIWAsyncEvent //procedure Submit(const AValue: string)   //procedure pageAdded(APage: TIWTabPage)   //procedure pageRemoved(APage: TIWTabPage) //function CreateNewPage(const APageTitle: string; const APageName: string): TIWTabPage //

TIWTabPage:
{IWCompTabControl.TIWTabPage < TIWCustomRegion < TIWHTML40Container < TIWHTMLContainer < TIWContainer < TIWBaseContainer < TScrollingWinControl < TWinControl < TControl < TComponent < TPersistent < TObject}property Title: string   //property Color: TIWColor //property BorderOptions: TIWContainerBorderOptions //procedure Invalidate  //

测试:

{先在空白窗体上放 1 个 TIWTabControl, 3 个 TIWTabPage, 2 个 TIWButton}procedure TIWForm1.IWAppFormCreate(Sender: TObject);var  fPage1, fPage2, fPage3: TIWTabPage;begin  //动态建立 3 个 TIWTabPage  fPage1 := IWTabControl1.CreateNewPage(‘ Page1 ‘);  fPage2 := IWTabControl1.CreateNewPage(‘ Page2 ‘);  fPage3 := IWTabControl1.CreateNewPage(‘ Page3 ‘);  //让 IWButton1 具备切换标签的功能  JavaScript.Add(‘var i = 0;‘); //js 全局变量  IWButton1.ScriptEvents.HookEvent(‘onclick‘, ‘i++; i%=3; IWTABCONTROL1.tabPane.setSelectedIndex(i);‘); //IWTABCONTROL1 或换成 IWTABCONTROL1IWCL  IWTabControl1.Color := $efefef;  IWTabControl1.InactiveTabColor := $efefef;  IWTabControl1.ActiveTabColor := $0000ff;  IWGrid1.Parent := fPage1;  IWGrid2.Parent := fPage2;  IWGrid3.Parent := fPage3;  IWGrid1.RowCount := 3;  IWGrid1.ColumnCount := 4;  IWGrid1.BGColor := $ffeeee;  IWGrid1.CellPadding :=4;  IWGrid1.Align := alTop;  IWGrid2.RowCount := 4;  IWGrid2.ColumnCount := 5;  IWGrid2.BGColor := $eeeeff;  IWGrid2.CellPadding := 4;  IWGrid2.Align := alTop;  IWGrid3.RowCount := 5;  IWGrid3.ColumnCount := 6;  IWGrid3.BGColor := $eeffee;  IWGrid3.CellPadding := 4;  IWGrid3.Align := alTop;end;{测试 Pages 属性}procedure TIWForm1.IWButton2Click(Sender: TObject);begin  WebApplication.ShowMessage(TIWTabPage(IWTabControl1.Pages[0]).Title); // Page1end;

效果图:


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