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  • WinAPI 字符及字符串函数(8): IsCharUpper 是否是个大写字母

    unit Unit1;
    
    interface
    
    uses
      Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
      Dialogs, StdCtrls;
    
    type
      TForm1 = class(TForm)
        Button1: TButton;
        Button2: TButton;
        Button3: TButton;
        Button4: TButton;
        Button5: TButton;
        procedure Button1Click(Sender: TObject);
        procedure Button2Click(Sender: TObject);
        procedure Button3Click(Sender: TObject);
        procedure Button4Click(Sender: TObject);
        procedure Button5Click(Sender: TObject);
      end;
    
    var
      Form1: TForm1;
    
    implementation
    
    {$R *.dfm}
    
    procedure TForm1.Button1Click(Sender: TObject);
    var
      c: Char;
      b: BOOL;
    begin
      c := #65; {A}
      b := IsCharUpper(c);
      ShowMessage(BoolToStr(b, True)); {True}
    end;
    
    procedure TForm1.Button2Click(Sender: TObject);
    var
      c: Char;
      b: BOOL;
    begin
      c := #97; {a}
      b := IsCharUpper(c);
      ShowMessage(BoolToStr(b, True)); {False}
    end;
    
    procedure TForm1.Button3Click(Sender: TObject);
    var
      c: Char;
      b: BOOL;
    begin
      c := #48; {0}
      b := IsCharUpper(c);
      ShowMessage(BoolToStr(b, True)); {False}
    end;
    
    procedure TForm1.Button4Click(Sender: TObject);
    var
      c: Char;
      b: BOOL;
    begin
      c := #13; {回车键}
      b := IsCharUpper(c);
      ShowMessage(BoolToStr(b, True)); {False}
    end;
    
    procedure TForm1.Button5Click(Sender: TObject);
    var
      c: WideChar;
      b: BOOL;
    begin
      c := #19975; {万}
      b := IsCharUpper(c);
      ShowMessage(BoolToStr(b, True)); {False}
    end;
    
    end.
    
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  • 原文地址:https://www.cnblogs.com/del/p/1327322.html
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