[팁/테크] InputQuery, InputBox, InputComboBox 확장하기를 참조하시면 새로 만드실 수 있어요.
Application.MessageBox 호출을 MessageBox만 해서, 유닛소스 위에서 선언하거나 맨 마지막 참조하는 유닛에 넣르셔도 되구요,
아예 함수명을 바꾼후 사용하셔도 됩니다
일단은 OK/Cancel'버튼 2개 짜리입니다.


//****************************************************************************//

function MessageBox(lpText, lpCaption: PChar; uType: UINT): Integer; stdcall;
var
Form: TForm;
Prompt: TLabel;
DialogUnits: TPoint;
ButtonTop, ButtonWidth, ButtonHeight, FontSize: Integer;

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;

begin
Result := IDNO;
Form := TForm.Create(Application);
with Form do
try
FontSize := 20; //폰트크기설정
Font := Application.MainForm.Font; //폰트설정
Canvas.Font := Application.MainForm.Font;//Font;
Canvas.Font.Size := FontSize;
DialogUnits := GetAveCharSize(Canvas);
BorderStyle := bsDialog;
Caption := lpCaption;
ClientWidth := MulDiv(180, DialogUnits.X, 4);
Position := poScreenCenter;
Prompt := TLabel.Create(Form);
with Prompt do
begin
Parent := Form;
Font := Application.MainForm.Font; //폰트설정
Font.Size := FontSize;
Caption := lpText;
Left := MulDiv(8, DialogUnits.X, 4);
Top := MulDiv(8, DialogUnits.Y, 8);
Constraints.MaxWidth := MulDiv(164, DialogUnits.X, 4);
WordWrap := True;
end;
ButtonTop := Prompt.Top + Prompt.Height + 20;
ButtonWidth := MulDiv(50, DialogUnits.X, 4);
ButtonHeight := MulDiv(14, DialogUnits.Y, 8);
with TButton.Create(Form) do
begin
Parent := Form;
Font := Application.MainForm.Font; //폰트설정
Font.Size := FontSize;
Caption := 'OK'; //OK버튼 글자
ModalResult := mrOk;
Default := True;
SetBounds(MulDiv(38, DialogUnits.X, 4), ButtonTop, ButtonWidth, ButtonHeight);
end;
with TButton.Create(Form) do
begin
Parent := Form;
Font := Application.MainForm.Font; //폰트설정
Font.Size := FontSize;
Caption := 'Cancel'; //Cancel'버튼 글자
ModalResult := mrCancel;
Cancel := True;
SetBounds(MulDiv(92, DialogUnits.X, 4), ButtonTop, ButtonWidth, ButtonHeight);
Form.ClientHeight := Top + Height + 13;
end;

if ShowModal = mrOk then
begin
Result := IDYES;
end;
finally
Form.Free;
end;
end;
////////////////////////////////////////////////////////////////////////////////
procedure TForm1.Button1Click(Sender: TObject);
begin
//if Application.MessageBox(pchar('msg_SaveQ'), 'BookMark', MB_YESNO) = IDNO then begin
if MessageBox(pchar('msg_SaveQ'), 'BookMark', MB_YESNO) = IDNO then begin
showmessage('123');
end;
end;