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unit frm_main;
{$mode objfpc}{$H+}
interface
uses
SysUtils, Classes,
fpg_base, fpg_main, fpg_form, fpg_panel, fpg_button,
fpg_checkbox, fra_test, fpg_menu;
type
TMainForm = class(TfpgForm)
private
{@VFD_HEAD_BEGIN: MainForm}
BorderBevel: TfpgBevel;
Container: TfpgBevel;
btnExternal: TfpgButton;
btnEmbed1: TfpgButton;
CheckBox1: TfpgCheckBox;
MainMenu: TfpgMenubar;
mnuFile: TfpgPopupMenu;
mnuHelp: TfpgPopupMenu;
btnEmbed2: TfpgButton;
{@VFD_HEAD_END: MainForm}
frame: TMyFrame;
procedure btnExternalClicked(Sender: TObject);
procedure btnEmbed1Clicked(Sender: TObject);
procedure btnEmbed2Clicked(Sender: TObject);
procedure CheckBoxChanged(Sender: TObject);
procedure miQuitClicked(Sender: TObject);
procedure miHelpAboutClicked(Sender: TObject);
public
procedure AfterCreate; override;
end;
{@VFD_NEWFORM_DECL}
implementation
uses
fpg_widget, fpg_dialogs;
var
{ manage indentation level }
indent: integer = 0;
{ Output component hierarchy and status of each component's Visible property }
procedure PrintVisibleState(AComponent: TfpgWidget);
var
i: integer;
{ Create string equal to indentation level }
function Spaces: string;
var
j: integer;
begin
if indent = 0 then
exit;
for j := 1 to indent do
Result := Result + ' ';
end;
begin
writeln(Spaces + AComponent.ClassName + ' - [parent]: ' + BoolToStr(AComponent.Visible, True));
Inc(indent, 2);
for i := 0 to AComponent.ComponentCount-1 do
begin
if AComponent.Components[i].ComponentCount > 0 then
PrintVisibleState(TfpgWidget(AComponent.Components[i]))
else
writeln(Spaces + AComponent.Components[i].ClassName + ': ' + BoolToStr(TfpgWidget(AComponent.Components[i]).Visible, True));
end;
dec(indent, 2);
end;
{@VFD_NEWFORM_IMPL}
procedure TMainForm.CheckBoxChanged(Sender: TObject);
begin
if Assigned(frame) then
begin
frame.Visible := Checkbox1.Checked;
writeln('Checkbox clicked...');
PrintVisibleState(self);
end;
end;
procedure TMainForm.miQuitClicked(Sender: TObject);
begin
Close;
end;
procedure TMainForm.miHelpAboutClicked(Sender: TObject);
begin
TfpgMessageDialog.Information('Embedded Frame Demo', 'A simple demo showing how to embed frames')
end;
procedure TMainForm.btnExternalClicked(Sender: TObject);
var
frm: TfpgForm;
fra: TMyFrame;
begin
{ create a form at runtime that will hold our frame. }
frm := TfpgForm.Create(nil);
try
frm.WindowPosition := wpOneThirdDown;
frm.Width := 284;
frm.Height := 257;
// embed the frame in the form
fra := TMyFrame.Create(frm);
fra.Align := alClient;
frm.ShowModal;
finally
frm.Free;
end;
end;
procedure TMainForm.btnEmbed1Clicked(Sender: TObject);
begin
if Assigned(frame) then
exit;
frame := TMyFrame.Create(Container);
with frame do
begin
Name := 'frame';
SetPosition(0, 0, 280, 196);
Align := alClient;
end;
PrintVisibleState(self);
CheckBox1.Enabled := True;
CheckBox1.Checked := True;
btnEmbed2.Enabled := False;
end;
procedure TMainForm.btnEmbed2Clicked(Sender: TObject);
begin
if Assigned(frame) then
exit;
frame := TMyFrame.Create(Container);
with frame do
begin
Name := 'frame';
SetPosition(0, 0, 280, 196);
Align := alClient;
Visible := False;
end;
PrintVisibleState(self);
CheckBox1.Enabled := True;
CheckBox1.Checked := False;
btnEmbed1.Enabled := False;
end;
procedure TMainForm.AfterCreate;
begin
{%region 'Auto-generated GUI code' -fold}
{@VFD_BODY_BEGIN: MainForm}
Name := 'MainForm';
SetPosition(387, 207, 393, 340);
WindowTitle := 'MainForm';
Hint := '';
ShowHint := True;
BorderBevel := TfpgBevel.Create(self);
with BorderBevel do
begin
Name := 'BorderBevel';
SetPosition(0, 68, 393, 272);
Anchors := [anLeft,anRight,anTop,anBottom];
Hint := '';
Shape := bsSpacer;
end;
Container := TfpgBevel.Create(BorderBevel);
with Container do
begin
Name := 'Container';
SetPosition(8, 8, 377, 257);
Anchors := [anLeft,anRight,anTop,anBottom];
Hint := '';
Style := bsLowered;
Shape := bsSpacer;
end;
btnExternal := TfpgButton.Create(self);
with btnExternal do
begin
Name := 'btnExternal';
SetPosition(12, 40, 80, 24);
Text := 'External';
FontDesc := '#Label1';
Hint := '';
ImageName := '';
TabOrder := 1;
OnClick := @btnExternalClicked;
end;
btnEmbed1 := TfpgButton.Create(self);
with btnEmbed1 do
begin
Name := 'btnEmbed1';
SetPosition(96, 40, 80, 24);
Text := 'Embed 1';
FontDesc := '#Label1';
Hint := 'Create embedded Form with Visible = True (default behaviour)';
ImageName := '';
TabOrder := 2;
OnClick := @btnEmbed1Clicked;
end;
CheckBox1 := TfpgCheckBox.Create(self);
with CheckBox1 do
begin
Name := 'CheckBox1';
SetPosition(296, 40, 93, 20);
FontDesc := '#Label1';
Hint := '';
TabOrder := 4;
Text := 'Visible';
Enabled := false;
OnChange := @CheckBoxChanged;
end;
MainMenu := TfpgMenubar.Create(self);
with MainMenu do
begin
Name := 'MainMenu';
SetPosition(0, 0, 393, 28);
Anchors := [anLeft,anRight,anTop];
end;
mnuFile := TfpgPopupMenu.Create(self);
with mnuFile do
begin
Name := 'mnuFile';
SetPosition(156, 88, 120, 20);
AddMenuItem('Quit', '', @miQuitClicked);
end;
mnuHelp := TfpgPopupMenu.Create(self);
with mnuHelp do
begin
Name := 'mnuHelp';
SetPosition(156, 112, 120, 20);
AddMenuItem('About...', '', @miHelpAboutClicked);
end;
btnEmbed2 := TfpgButton.Create(self);
with btnEmbed2 do
begin
Name := 'btnEmbed2';
SetPosition(180, 40, 80, 24);
Text := 'Embed 2';
FontDesc := '#Label1';
Hint := 'Create embedded Form with Visible = False';
ImageName := '';
TabOrder := 7;
OnClick := @btnEmbed2Clicked;
end;
{@VFD_BODY_END: MainForm}
{%endregion}
MainMenu.AddMenuItem('File', nil).SubMenu := mnuFile;
MainMenu.AddMenuItem('Help', nil).SubMenu := mnuHelp;
end;
end.
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