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{
fpGUI - Free Pascal GUI Library
Event Test example
Copyright (C) 2000 - 2006 See the file AUTHORS, included in this
distribution, for details of the copyright.
See the file COPYING.modifiedLGPL, included in this distribution,
for details about redistributing fpGUI.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
}
program EventTest;
uses
SysUtils,
Classes,
GFXBase,
fpGFX;
const
ButtonNames: array[TMouseButton] of PChar =
('Left', 'Right', 'Middle');
type
TMainWindow = class(TFWindow)
procedure FocusIn(Sender: TObject);
procedure FocusOut(Sender: TObject);
procedure KeyPressed(Sender: TObject; AKey: Word; AShiftState: TShiftState);
procedure KeyReleased(Sender: TObject; AKey: Word; AShiftState: TShiftState);
procedure KeyChar(Sender: TObject; AKeyChar: Char);
procedure MouseEnter(Sender: TObject; AShift: TShiftState; const AMousePos: TPoint);
procedure MouseLeave(Sender: TObject);
procedure MousePressed(Sender: TObject; AButton: TMouseButton; AShift: TShiftState; const AMousePos: TPoint);
procedure MouseReleased(Sender: TObject; AButton: TMouseButton; AShift: TShiftState; const AMousePos: TPoint);
procedure MouseMove(Sender: TObject; AShift: TShiftState; const AMousePos: TPoint);
procedure MouseWheel(Sender: TObject; AShift: TShiftState; AWheelDelta: Single; const AMousePos: TPoint);
procedure Paint(Sender: TObject; const ARect: TRect);
procedure Move(Sender: TObject);
procedure Resize(Sender: TObject);
private
function ShiftStateToStr(Shift: TShiftState): String;
function MouseState(AShift: TShiftState; const AMousePos: TPoint): String;
public
constructor Create;
end;
constructor TMainWindow.Create;
begin
inherited Create(nil, [woWindow]);
Title := 'fpGFX Event Test example';
SetClientSize(Size(500, 100));
OnFocusIn := @FocusIn;
OnFocusOut := @FocusOut;
OnKeyPressed := @KeyPressed;
OnKeyReleased := @KeyReleased;
OnKeyChar := @KeyChar;
OnMouseEnter := @MouseEnter;
OnMouseLeave := @MouseLeave;
OnMousePressed := @MousePressed;
OnMouseReleased := @MouseReleased;
OnMouseMove := @MouseMove;
OnMouseWheel := @MouseWheel;
OnPaint := @Paint;
OnMove := @Move;
OnResize := @Resize;
Show;
end;
function TMainWindow.ShiftStateToStr(Shift: TShiftState): String;
begin
SetLength(Result, 0);
if ssShift in Shift then
Result := 'Shift ';
if ssAlt in Shift then
Result := Result + 'Alt ';
if ssCtrl in Shift then
Result := Result + 'Ctrl ';
if ssMeta in Shift then
Result := Result + 'Meta ';
if ssSuper in Shift then
Result := Result + 'Super ';
if ssHyper in Shift then
Result := Result + 'Hyper ';
if ssAltGr in Shift then
Result := Result + 'AltGr ';
if ssCaps in Shift then
Result := Result + 'Caps ';
if ssNum in Shift then
Result := Result + 'Num ';
if ssScroll in Shift then
Result := Result + 'Scroll ';
if ssLeft in Shift then
Result := Result + 'Left ';
if ssRight in Shift then
Result := Result + 'Right ';
if ssMiddle in Shift then
Result := Result + 'Middle ';
if ssDouble in Shift then
Result := Result + 'Double ';
if Length(Result) > 0 then
SetLength(Result, Length(Result) - 1);
end;
function TMainWindow.MouseState(AShift: TShiftState;
const AMousePos: TPoint): String;
var
ShiftStateStr: String;
begin
ShiftStateStr := ShiftStateToStr(AShift);
Result := '[X=' + IntToStr(AMousePos.x) + ' Y=' + IntToStr(AMousePos.y);
if Length(ShiftStateStr) > 0 then
Result := Result + ' ' + ShiftStateStr;
Result := Result + ']';
end;
procedure TMainWindow.FocusIn(Sender: TObject);
begin
WriteLn('Got focus');
end;
procedure TMainWindow.FocusOut(Sender: TObject);
begin
WriteLn('Lost focus');
end;
procedure TMainWindow.KeyPressed(Sender: TObject; AKey: Word;
AShiftState: TShiftState);
begin
WriteLn('[', ShiftStateToStr(AShiftState), '] Key pressed: ',
KeycodeToText(AKey, []));
end;
procedure TMainWindow.KeyReleased(Sender: TObject; AKey: Word;
AShiftState: TShiftState);
begin
WriteLn('[', ShiftStateToStr(AShiftState), '] Key released: ',
KeycodeToText(AKey, []));
end;
procedure TMainWindow.KeyChar(Sender: TObject; AKeyChar: Char);
begin
Write('Character generated: ');
if AKeyChar >= ' ' then
WriteLn('''', AKeyChar, '''')
else
WriteLn('#', Ord(AKeyChar));
end;
procedure TMainWindow.MouseEnter(Sender: TObject; AShift: TShiftState;
const AMousePos: TPoint);
begin
WriteLn(MouseState(AShift, AMousePos), 'Mouse entered window');
end;
procedure TMainWindow.MouseLeave(Sender: TObject);
begin
WriteLn('Mouse left window');
end;
procedure TMainWindow.MousePressed(Sender: TObject; AButton: TMouseButton;
AShift: TShiftState; const AMousePos: TPoint);
begin
WriteLn(MouseState(AShift, AMousePos),
'Mouse button pressed: ', ButtonNames[AButton]);
end;
procedure TMainWindow.MouseReleased(Sender: TObject; AButton: TMouseButton;
AShift: TShiftState; const AMousePos: TPoint);
begin
WriteLn(MouseState(AShift, AMousePos),
'Mouse button released: ', ButtonNames[AButton]);
end;
procedure TMainWindow.MouseMove(Sender: TObject; AShift: TShiftState;
const AMousePos: TPoint);
begin
WriteLn(MouseState(AShift, AMousePos), 'Mouse moved');
end;
procedure TMainWindow.MouseWheel(Sender: TObject; AShift: TShiftState;
AWheelDelta: Single; const AMousePos: TPoint);
begin
WriteLn(MouseState(AShift, AMousePos), 'Mouse wheel rotated by ',
AWheelDelta:0:2, ' ticks');
end;
procedure TMainWindow.Paint(Sender: TObject; const ARect: TRect);
begin
with Canvas do
begin
SetColor(colWhite);
FillRect(ARect);
SetColor(colBlack);
TextOut(Point(0, 0), 'Event test');
TextOut(Point(0, FontCellHeight),
'Do something interactive (move mouse, press keys...)');
TextOut(Point(0, FontCellHeight * 2),
'and watch the output on the console.');
end;
end;
procedure TMainWindow.Move(Sender: TObject);
begin
WriteLn('Window has been moved to ', Left, '/', Top);
end;
procedure TMainWindow.Resize(Sender: TObject);
begin
WriteLn('Window has been resized. New width: ',
Width, ' x ', Height,
'; new client width: ', ClientWidth, ' x ', ClientHeight);
end;
var
MainWindow: TMainWindow;
begin
gApplication.Initialize;
MainWindow := TMainWindow.Create;
gApplication.AddWindow(MainWindow);
MainWindow.Show;
gApplication.Run;
end.
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