InputBox能否指定输入的字符以"*"显示? 自己做一个INPUTBOX窗体不就可以控制了吗! 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 uses Consts;function GetAveCharSize(Canvas: TCanvas): TPoint;var I: Integer; Buffer: array[0..51] of Char;begin for I := 0 to 25 do Buffer[I] := Chr(I + Ord('A')); for I := 0 to 25 do Buffer[I + 26] := Chr(I + Ord('a')); GetTextExtentPoint(Canvas.Handle, Buffer, 52, TSize(Result)); Result.X := Result.X div 52;end;function InputQueryEx(const ACaption, APrompt: string; var Value: string; APasswordChar: Char = #0): Boolean;var Form: TForm; Prompt: TLabel; Edit: TEdit; DialogUnits: TPoint; ButtonTop, ButtonWidth, ButtonHeight: Integer;begin Result := False; Form := TForm.Create(Application); with Form do try Canvas.Font := Font; DialogUnits := GetAveCharSize(Canvas); BorderStyle := bsDialog; Caption := ACaption; ClientWidth := MulDiv(180, DialogUnits.X, 4); Position := poScreenCenter; Prompt := TLabel.Create(Form); with Prompt do begin Parent := Form; Caption := APrompt; Left := MulDiv(8, DialogUnits.X, 4); Top := MulDiv(8, DialogUnits.Y, 8); Constraints.MaxWidth := MulDiv(164, DialogUnits.X, 4); WordWrap := True; end; Edit := TEdit.Create(Form); with Edit do begin Parent := Form; Left := Prompt.Left; Top := Prompt.Top + Prompt.Height + 5; Width := MulDiv(164, DialogUnits.X, 4); MaxLength := 255; PasswordChar := APasswordChar; Text := Value; SelectAll; end; ButtonTop := Edit.Top + Edit.Height + 15; ButtonWidth := MulDiv(50, DialogUnits.X, 4); ButtonHeight := MulDiv(14, DialogUnits.Y, 8); with TButton.Create(Form) do begin Parent := Form; Caption := SMsgDlgOK; ModalResult := mrOk; Default := True; SetBounds(MulDiv(38, DialogUnits.X, 4), ButtonTop, ButtonWidth, ButtonHeight); end; with TButton.Create(Form) do begin Parent := Form; Caption := SMsgDlgCancel; ModalResult := mrCancel; Cancel := True; SetBounds(MulDiv(92, DialogUnits.X, 4), Edit.Top + Edit.Height + 15, ButtonWidth, ButtonHeight); Form.ClientHeight := Top + Height + 13; end; if ShowModal = mrOk then begin Value := Edit.Text; Result := True; end; finally Form.Free; end;end;function InputBoxEx(const ACaption, APrompt, ADefault: string; APasswordChar: Char = #0): string;begin Result := ADefault; InputQueryEx(ACaption, APrompt, Result, APasswordChar);end;procedure TForm1.Button1Click(Sender: TObject);begin InputBoxEx('Password', 'Input:', '你好', '*');end; QQ的通讯问题 (用SendARP获取MAC) 一个引用问题,未定义, 想做一个文本编辑器,要加一个功能,就是对预先设好的关键字,进行显亮操作。 关于tchart问题(急)? Delphi写的WIN32程序如何可以和C#程序互相调用! SELECT后怎么取其中一个字段的值! 为什么删除不了? 玩边锋的朋友请进来接分:) 当前时间的前一天怎么可以求算出来? 招女友公示 关于子字符串的一个小问题,高分求教 请问这是为什么?
Consts;function GetAveCharSize(Canvas: TCanvas): TPoint;
var
I: Integer;
Buffer: array[0..51] of Char;
begin
for I := 0 to 25 do Buffer[I] := Chr(I + Ord('A'));
for I := 0 to 25 do Buffer[I + 26] := Chr(I + Ord('a'));
GetTextExtentPoint(Canvas.Handle, Buffer, 52, TSize(Result));
Result.X := Result.X div 52;
end;function InputQueryEx(const ACaption, APrompt: string;
var Value: string; APasswordChar: Char = #0): Boolean;
var
Form: TForm;
Prompt: TLabel;
Edit: TEdit;
DialogUnits: TPoint;
ButtonTop, ButtonWidth, ButtonHeight: Integer;
begin
Result := False;
Form := TForm.Create(Application);
with Form do
try
Canvas.Font := Font;
DialogUnits := GetAveCharSize(Canvas);
BorderStyle := bsDialog;
Caption := ACaption;
ClientWidth := MulDiv(180, DialogUnits.X, 4);
Position := poScreenCenter;
Prompt := TLabel.Create(Form);
with Prompt do
begin
Parent := Form;
Caption := APrompt;
Left := MulDiv(8, DialogUnits.X, 4);
Top := MulDiv(8, DialogUnits.Y, 8);
Constraints.MaxWidth := MulDiv(164, DialogUnits.X, 4);
WordWrap := True;
end;
Edit := TEdit.Create(Form);
with Edit do
begin
Parent := Form;
Left := Prompt.Left;
Top := Prompt.Top + Prompt.Height + 5;
Width := MulDiv(164, DialogUnits.X, 4);
MaxLength := 255;
PasswordChar := APasswordChar;
Text := Value;
SelectAll;
end;
ButtonTop := Edit.Top + Edit.Height + 15;
ButtonWidth := MulDiv(50, DialogUnits.X, 4);
ButtonHeight := MulDiv(14, DialogUnits.Y, 8);
with TButton.Create(Form) do
begin
Parent := Form;
Caption := SMsgDlgOK;
ModalResult := mrOk;
Default := True;
SetBounds(MulDiv(38, DialogUnits.X, 4), ButtonTop, ButtonWidth,
ButtonHeight);
end;
with TButton.Create(Form) do
begin
Parent := Form;
Caption := SMsgDlgCancel;
ModalResult := mrCancel;
Cancel := True;
SetBounds(MulDiv(92, DialogUnits.X, 4), Edit.Top + Edit.Height + 15,
ButtonWidth, ButtonHeight);
Form.ClientHeight := Top + Height + 13;
end;
if ShowModal = mrOk then
begin
Value := Edit.Text;
Result := True;
end;
finally
Form.Free;
end;
end;function InputBoxEx(const ACaption, APrompt, ADefault: string;
APasswordChar: Char = #0): string;
begin
Result := ADefault;
InputQueryEx(ACaption, APrompt, Result, APasswordChar);
end;procedure TForm1.Button1Click(Sender: TObject);
begin
InputBoxEx('Password', 'Input:', '你好', '*');
end;