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 程式師世界 >> 編程語言 >> 更多編程語言 >> Delphi >> Delphi調用WinAPI 字符及字符串函數(7)

Delphi調用WinAPI 字符及字符串函數(7)

編輯:Delphi

IsCharLower - 是否是個小寫字母

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 := IsCharLower(c);
 ShowMessage(BoolToStr(b, True)); {False}
end;

procedure TForm1.Button2Click(Sender: TObject);

var
 c: Char;
 b: BOOL;
begin
 c := #97; {a}
 b := IsCharLower(c);
 ShowMessage(BoolToStr(b, True)); {True}
end;

procedure TForm1.Button3Click(Sender: TObject);

var
 c: Char;
 b: BOOL;
begin
 c := #48; {0}
 b := IsCharLower(c);
 ShowMessage(BoolToStr(b, True)); {False}
end;

procedure TForm1.Button4Click(Sender: TObject);

var
 c: Char;
 b: BOOL;
begin
 c := #13; {回車鍵}
 b := IsCharLower(c);
 ShowMessage(BoolToStr(b, True)); {False}
end;

procedure TForm1.Button5Click(Sender: TObject);

var
 c: WideChar;
 b: BOOL;
begin
 c := #19975; {萬}
 b := IsCharLower(c);
 ShowMessage(BoolToStr(b, True)); {False}
end;

end.

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