Category string handling routines function Copy(S; Index, Count: Integer): string; function Copy(S; Index, Count: Integer): array; Description S is an expression of a string or dynamic-array type. Index and Coun
函数原型 function ChangeFileExt(const FileName, Extension: string): string; 范例procedure TForm1.Button1Click(Sender: TObject); var S: String; P1:String; P2:String; begin P1:='abc.txt'; P2:='.ini'; S := ChangeFileExt(P1,P2); Label1.Caption:=S; end; 结果S== 'abc...
摘要:不要忘记 引入 这个单元,System.SysUtils 否则报错,什么也点不出来; 大小写转换 function ToLower: string; function ToLower(LocaleID: TLocaleID): string; function ToLowerInvariant: s 阅读全文 posted @ 2024-03-11 15:59 del88 阅读(182) 评论(0) 推荐(0) delphi...
1、 CompareStr function Compares two strings case sensitively. Unit SysUtils Category string handling routines function CompareStr(const S1, S2: string): Integer; Description CompareStr compares S1 to ... delphi常用函数四 1、 TStrings TStrings is the base class for objects that represent a list ...
Ironically, some of Delphi’s string handling functions do not handle multibyte strings correctly. Instead, theSysUtilsunit has numerous string functions that work correctly with multibyte strings. Handling multibyte strings is especially important for filenames, and theSysUtilsunit has special functions ...
function GetModuleName(Module: HMODULE): string; 描述 调用GetModuleFileName来获得给定句柄的模块的完全限定名称。 Module是模块的句柄。 7.HInstance 变量 句柄,由Windows提供给模块(module)。 单元 SysInit var HInstance: LongWord; 描述 HInstance 容纳了由Windows提供的应用程序或库的实例句柄 ...
4. 变量与数据类型:Delphi支持多种数据类型,如Integer、Real、String等,程序员需要根据应用需求定义和使用它们。 5. 输入输出:学习如何通过Console(控制台)或用户界面(Form)获取和显示用户输入,以及与文件进行交互。 6. 错误处理:了解如何通过异常处理(Exception Handling)来处理程序运行时可能遇到的错误。 7. 程序执...
函数原型 function DateTimeToStr(DateTime: TDateTime): string;范例procedure TForm1.Button1Click(Sender: TObject); begin Label1.Caption := DateTimeToStr(Now); end;---DateTimeToString 日期时间转换成自定型字串---Unit SysUtils函数原型 procedure DateTime...
procedure OnPing(Sender: TObject; Host: String; Size, Time: Integer); procedure HandlingEnd; procedure HandlingPing; protected procedure Execute;override; procedure DoTerminate;override; public //采用函数指针的方式,因为传递过来如果是UI控件类的方法,该方法需要访问UI元素,则需要做同步处理, ...
To create an event handling procedure, select the event you want the component to react to and double-click the event name — the scripting system will automatically insert the event handler framework code. For example, select the TButton component from the Tool Palette panel and drop it on ...