dlangui/examples/example1/src/main.d

478 lines
23 KiB
D

module main;
import dlangui.all;
import std.stdio;
import std.conv;
mixin APP_ENTRY_POINT;
Widget createAboutWidget()
{
LinearLayout res = new VerticalLayout();
res.padding(Rect(10,10,10,10));
res.addChild(new TextWidget(null, "DLangUI demo app"d));
res.addChild(new TextWidget(null, "(C) Vadim Lopatin, 2014"d));
res.addChild(new TextWidget(null, "http://github.com/buggins/dlangui"d));
Button closeButton = new Button("close", "Close"d);
closeButton.onClickListener = delegate(Widget src) {
Log.i("Closing window");
res.window.close();
return true;
};
res.addChild(closeButton);
return res;
}
class SampleAnimationWidget : Widget {
ulong animationProgress;
this(string ID) {
super(ID);
}
/// returns true is widget is being animated - need to call animate() and redraw
@property override bool animating() { return true; }
/// animates window; interval is time left from previous draw, in hnsecs (1/10000000 of second)
override void animate(long interval) {
animationProgress += interval;
invalidate();
}
void drawAnimatedRect(DrawBuf buf, uint p, Rect rc, int speedx, int speedy, int sz) {
int x = (p * speedx % rc.width);
int y = (p * speedy % rc.height);
if (x < 0)
x += rc.width;
if (y < 0)
y += rc.height;
uint a = 64 + ((p / 2) & 0x7F);
uint r = 128 + ((p / 7) & 0x7F);
uint g = 128 + ((p / 5) & 0x7F);
uint b = 128 + ((p / 3) & 0x7F);
uint color = (a << 24) | (r << 16) | (g << 8) | b;
buf.fillRect(Rect(rc.left + x, rc.top + y, rc.left + x + sz, rc.top + y + sz), color);
}
/// Draw widget at its position to buffer
override void onDraw(DrawBuf buf) {
if (visibility != Visibility.Visible)
return;
super.onDraw(buf);
Rect rc = _pos;
applyMargins(rc);
auto saver = ClipRectSaver(buf, rc, alpha);
applyPadding(rc);
drawAnimatedRect(buf, cast(uint)(animationProgress / 295430), rc, 2, 3, 100);
drawAnimatedRect(buf, cast(uint)(animationProgress / 312400) + 100, rc, 3, 2, 130);
drawAnimatedRect(buf, cast(uint)(animationProgress / 212400) + 200, rc, -2, 1, 290);
drawAnimatedRect(buf, cast(uint)(animationProgress / 512400) + 300, rc, 2, -2, 200);
drawAnimatedRect(buf, cast(uint)(animationProgress / 214230) + 800, rc, 1, 2, 390);
drawAnimatedRect(buf, cast(uint)(animationProgress / 123320) + 900, rc, -1, -3, 150);
drawAnimatedRect(buf, cast(uint)(animationProgress / 100000) + 100, rc, -1, -1, 120);
}
}
Widget createEditorSettingsControl(EditWidgetBase editor) {
HorizontalLayout res = new HorizontalLayout("editor_options");
res.addChild((new CheckBox("wantTabs", "wantTabs"d)).checked(editor.wantTabs).addOnCheckChangeListener(delegate(Widget, bool checked) { editor.wantTabs = checked; return true;}));
res.addChild((new CheckBox("useSpacesForTabs", "useSpacesForTabs"d)).checked(editor.useSpacesForTabs).addOnCheckChangeListener(delegate(Widget, bool checked) { editor.useSpacesForTabs = checked; return true;}));
res.addChild((new CheckBox("readOnly", "readOnly"d)).checked(editor.readOnly).addOnCheckChangeListener(delegate(Widget, bool checked) { editor.readOnly = checked; return true;}));
res.addChild((new CheckBox("fixedFont", "fixedFont"d)).checked(editor.fontFamily == FontFamily.MonoSpace).addOnCheckChangeListener(delegate(Widget, bool checked) {
if (checked)
editor.fontFamily(FontFamily.MonoSpace).fontFace("Courier New");
else
editor.fontFamily(FontFamily.SansSerif).fontFace("Arial");
return true;
}));
res.addChild((new CheckBox("tabSize", "Tab size 8"d)).checked(editor.tabSize == 8).addOnCheckChangeListener(delegate(Widget, bool checked) {
if (checked)
editor.tabSize(8);
else
editor.tabSize(4);
return true;
}));
return res;
}
/// entry point for dlangui based application
extern (C) int UIAppMain(string[] args) {
// resource directory search paths
string[] resourceDirs = [
appendPath(exePath, "../../../res/"), // for Visual D and DUB builds
appendPath(exePath, "../../../res/mdpi/"), // for Visual D and DUB builds
appendPath(exePath, "../../../../res/"),// for Mono-D builds
appendPath(exePath, "../../../../res/mdpi/"),// for Mono-D builds
appendPath(exePath, "res/"), // when res dir is located at the same directory as executable
appendPath(exePath, "../res/"), // when res dir is located at project directory
appendPath(exePath, "../../res/"), // when res dir is located at the same directory as executable
appendPath(exePath, "res/mdpi/"), // when res dir is located at the same directory as executable
appendPath(exePath, "../res/mdpi/"), // when res dir is located at project directory
appendPath(exePath, "../../res/mdpi/") // when res dir is located at the same directory as executable
];
// setup resource directories - will use only existing directories
Platform.instance.resourceDirs = resourceDirs;
// select translation file - for english language
Platform.instance.uiLanguage = "en";
// load theme from file "theme_default.xml"
Platform.instance.uiTheme = "theme_default";
// create window
Window window = Platform.instance.createWindow("My Window", null);
static if (true) {
VerticalLayout contentLayout = new VerticalLayout();
//=========================================================================
// create main menu
MenuItem mainMenuItems = new MenuItem();
MenuItem fileItem = new MenuItem(new Action(1, "MENU_FILE"));
fileItem.add(new Action(10, "MENU_FILE_OPEN"c, "document-open", KeyCode.KEY_O, KeyFlag.Control));
fileItem.add(new Action(11, "MENU_FILE_SAVE"c, "document-save", KeyCode.KEY_S, KeyFlag.Control));
MenuItem openRecentItem = new MenuItem(new Action(13, "MENU_FILE_OPEN_RECENT", "document-open-recent"));
openRecentItem.add(new Action(100, "&1: File 1"d));
openRecentItem.add(new Action(101, "&2: File 2"d));
openRecentItem.add(new Action(102, "&3: File 3"d));
openRecentItem.add(new Action(103, "&4: File 4"d));
openRecentItem.add(new Action(104, "&5: File 5"d));
fileItem.add(openRecentItem);
fileItem.add(new Action(12, "MENU_FILE_EXIT"c, "document-close"c, KeyCode.KEY_X, KeyFlag.Alt));
MenuItem editItem = new MenuItem(new Action(2, "MENU_EDIT"));
editItem.add(new Action(EditorActions.Copy, "MENU_EDIT_COPY"c, "edit-copy", KeyCode.KEY_C, KeyFlag.Control));
editItem.add(new Action(EditorActions.Paste, "MENU_EDIT_PASTE"c, "edit-paste", KeyCode.KEY_V, KeyFlag.Control));
editItem.add(new Action(EditorActions.Cut, "MENU_EDIT_CUT"c, "edit-cut", KeyCode.KEY_X, KeyFlag.Control));
editItem.add(new Action(EditorActions.Undo, "MENU_EDIT_UNDO"c, "edit-undo", KeyCode.KEY_Z, KeyFlag.Control));
editItem.add(new Action(EditorActions.Redo, "MENU_EDIT_REDO"c, "edit-redo", KeyCode.KEY_Y, KeyFlag.Control));
editItem.add(new Action(20, "MENU_EDIT_PREFERENCES"));
MenuItem editPopupItem = new MenuItem(null);
editPopupItem.add(new Action(EditorActions.Copy, "MENU_EDIT_COPY"c, "edit-copy", KeyCode.KEY_C, KeyFlag.Control));
editPopupItem.add(new Action(EditorActions.Paste, "MENU_EDIT_PASTE"c, "edit-paste", KeyCode.KEY_V, KeyFlag.Control));
editPopupItem.add(new Action(EditorActions.Cut, "MENU_EDIT_CUT"c, "edit-cut", KeyCode.KEY_X, KeyFlag.Control));
editPopupItem.add(new Action(EditorActions.Undo, "MENU_EDIT_UNDO"c, "edit-undo", KeyCode.KEY_Z, KeyFlag.Control));
editPopupItem.add(new Action(EditorActions.Redo, "MENU_EDIT_REDO"c, "edit-redo", KeyCode.KEY_Y, KeyFlag.Control));
MenuItem viewItem = new MenuItem(new Action(60, "MENU_VIEW"));
MenuItem langItem = new MenuItem(new Action(61, "MENU_VIEW_LANGUAGE"));
auto onLangChange = delegate (MenuItem item) {
if (!item.checked)
return false;
if (item.id == 611) {
// set interface language to english
platform.instance.uiLanguage = "en";
} else if (item.id == 612) {
// set interface language to russian
platform.instance.uiLanguage = "ru";
}
return true;
};
MenuItem enLang = (new MenuItem(new Action(611, "MENU_VIEW_LANGUAGE_EN"))).type(MenuItemType.Radio).checked(true);
MenuItem ruLang = (new MenuItem(new Action(612, "MENU_VIEW_LANGUAGE_RU"))).type(MenuItemType.Radio);
enLang.onMenuItemClick = onLangChange;
ruLang.onMenuItemClick = onLangChange;
langItem.add(enLang);
langItem.add(ruLang);
viewItem.add(langItem);
MenuItem themeItem = new MenuItem(new Action(62, "MENU_VIEW_THEME"));
MenuItem theme1 = (new MenuItem(new Action(621, "MENU_VIEW_THEME_DEFAULT"))).type(MenuItemType.Radio).checked(true);
MenuItem theme2 = (new MenuItem(new Action(622, "MENU_VIEW_THEME_CUSTOM1"))).type(MenuItemType.Radio);
auto onThemeChange = delegate (MenuItem item) {
if (!item.checked)
return false;
if (item.id == 621) {
platform.instance.uiTheme = "theme_default";
} else if (item.id == 622) {
platform.instance.uiTheme = "theme_custom1";
}
return true;
};
theme1.onMenuItemClick = onThemeChange;
theme2.onMenuItemClick = onThemeChange;
themeItem.add(theme1);
themeItem.add(theme2);
viewItem.add(themeItem);
MenuItem windowItem = new MenuItem(new Action(3, "MENU_WINDOW"c));
windowItem.add(new Action(30, "MENU_WINDOW_PREFERENCES"));
MenuItem helpItem = new MenuItem(new Action(4, "MENU_HELP"c));
helpItem.add(new Action(40, "MENU_HELP_VIEW_HELP"));
MenuItem aboutItem = new MenuItem(new Action(41, "MENU_HELP_ABOUT"));
helpItem.add(aboutItem);
aboutItem.onMenuItemClick = delegate(MenuItem item) {
Window wnd = Platform.instance.createWindow("About...", null, WindowFlag.Modal);
wnd.mainWidget = createAboutWidget();
wnd.show();
return true;
};
mainMenuItems.add(fileItem);
mainMenuItems.add(editItem);
mainMenuItems.add(viewItem);
mainMenuItems.add(windowItem);
mainMenuItems.add(helpItem);
MainMenu mainMenu = new MainMenu(mainMenuItems);
mainMenu.onMenuItemClickListener = delegate(MenuItem item) {
Log.d("mainMenu.onMenuItemListener", item.label);
const Action a = item.action;
if (a) {
if (a.id == 12) {
window.close();
return true;
} else if (window.focusedWidget)
return window.focusedWidget.handleAction(a);
else
return contentLayout.handleAction(a);
}
return false;
};
contentLayout.addChild(mainMenu);
// ========= create tabs ===================
TabWidget tabs = new TabWidget("TABS");
tabs.onTabChangedListener = delegate(string newTabId, string oldTabId) {
window.windowCaption = tabs.tab(newTabId).text.value ~ " - dlangui example 1"d;
};
tabs.layoutWidth(FILL_PARENT).layoutHeight(FILL_PARENT);
LinearLayout layout = new LinearLayout("tab1");
layout.addChild((new TextWidget()).textColor(0x00802000).text("Text widget 0"));
layout.addChild((new TextWidget()).textColor(0x40FF4000).text("Text widget"));
layout.addChild((new Button("BTN1")).textResource("EXIT")); //.textColor(0x40FF4000)
static if (true) {
LinearLayout hlayout = new HorizontalLayout();
hlayout.layoutWidth(FILL_PARENT);
//hlayout.addChild((new Button()).text("<<")); //.textColor(0x40FF4000)
hlayout.addChild((new TextWidget()).text("Several").alignment(Align.Center));
hlayout.addChild((new ImageWidget()).drawableId("btn_radio").padding(Rect(5,5,5,5)).alignment(Align.Center));
hlayout.addChild((new TextWidget()).text("items").alignment(Align.Center));
hlayout.addChild((new ImageWidget()).drawableId("btn_check").padding(Rect(5,5,5,5)).alignment(Align.Center));
hlayout.addChild((new TextWidget()).text("in horizontal layout"));
hlayout.addChild((new ImageWidget()).drawableId("exit").padding(Rect(5,5,5,5)).alignment(Align.Center));
hlayout.addChild((new EditLine("editline", "Some text to edit"d)).popupMenu(editPopupItem).alignment(Align.Center).layoutWidth(FILL_PARENT));
//hlayout.addChild((new Button()).text(">>")); //.textColor(0x40FF4000)
hlayout.backgroundColor = 0x8080C0;
layout.addChild(hlayout);
LinearLayout vlayoutgroup = new HorizontalLayout();
LinearLayout vlayout = new VerticalLayout();
vlayout.addChild((new TextWidget()).text("VLayout line 1").textColor(0x40FF4000)); //
vlayout.addChild((new TextWidget()).text("VLayout line 2").textColor(0x40FF8000));
vlayout.addChild((new TextWidget()).text("VLayout line 2").textColor(0x40008000));
vlayout.addChild(new RadioButton("rb1", "Radio button 1"d));
vlayout.addChild(new RadioButton("rb2", "Radio button 2"d));
vlayout.addChild(new RadioButton("rb3", "Radio button 3"d));
vlayout.layoutWidth(FILL_PARENT);
vlayoutgroup.addChild(vlayout);
vlayoutgroup.layoutWidth(FILL_PARENT);
ScrollBar vsb = new ScrollBar("vscroll", Orientation.Vertical);
vlayoutgroup.addChild(vsb);
layout.addChild(vlayoutgroup);
ScrollBar sb = new ScrollBar("hscroll", Orientation.Horizontal);
layout.addChild(sb.layoutHeight(WRAP_CONTENT).layoutWidth(FILL_PARENT));
layout.addChild((new CheckBox("BTN2", "Some checkbox"d)));
layout.addChild((new TextWidget()).textColor(0x40FF4000).text("Text widget"));
layout.addChild((new ImageWidget()).drawableId("exit").padding(Rect(5,5,5,5)));
layout.addChild((new TextWidget()).textColor(0xFF4000).text("Text widget2").padding(Rect(5,5,5,5)).margins(Rect(5,5,5,5)).backgroundColor(0xA0A0A0));
layout.addChild((new RadioButton("BTN3", "Some radio button"d)));
layout.addChild((new TextWidget(null, "Text widget3 with very long text"d)).textColor(0x004000));
layout.addChild(new VSpacer()); // vertical spacer to fill extra space
layout.childById("BTN1").onClickListener = (delegate (Widget w) { Log.d("onClick ", w.id); return true; });
layout.childById("BTN2").onClickListener = (delegate (Widget w) { Log.d("onClick ", w.id); return true; });
layout.childById("BTN3").onClickListener = (delegate (Widget w) { Log.d("onClick ", w.id); return true; });
}
layout.layoutHeight(FILL_PARENT).layoutWidth(FILL_PARENT);
tabs.addTab(layout, "Tab 1"d);
static if (true) {
ListWidget list = new ListWidget("tab2", Orientation.Vertical);
WidgetListAdapter listAdapter = new WidgetListAdapter();
for (int i = 0; i < 1000; i++)
listAdapter.widgets.add((new TextWidget()).text("List item "d ~ to!dstring(i)).styleId("LIST_ITEM"));
list.ownAdapter = listAdapter;
listAdapter.resetItemState(0, State.Enabled);
listAdapter.resetItemState(5, State.Enabled);
listAdapter.resetItemState(7, State.Enabled);
listAdapter.resetItemState(12, State.Enabled);
assert(list.itemEnabled(5) == false);
assert(list.itemEnabled(6) == true);
list.layoutWidth(FILL_PARENT).layoutHeight(FILL_PARENT);
list.selectItem(0);
tabs.addTab(list, "TAB_LONG_LIST"c);
}
{
LinearLayout layout3 = new LinearLayout("tab3");
layout3.addChild(new TextWidget(null, "Buttons in HorizontalLayout"d));
WidgetGroup buttons1 = new HorizontalLayout();
buttons1.addChild(new Button("btn1", "Button 1"d));
buttons1.addChild(new Button("btn2", "Button 2"d));
buttons1.addChild(new Button("btn3", "Button 3"d));
buttons1.addChild(new Button("btn4", "Button 4"d));
layout3.addChild(buttons1);
layout3.addChild(new VSpacer());
layout3.addChild(new TextWidget(null, "CheckBoxes in HorizontalLayout"d));
WidgetGroup buttons2 = new HorizontalLayout();
buttons2.addChild(new CheckBox("btn1", "CheckBox 1"d));
buttons2.addChild(new CheckBox("btn2", "CheckBox 2"d));
buttons2.addChild(new CheckBox("btn3", "CheckBox 3"d));
buttons2.addChild(new CheckBox("btn4", "CheckBox 4"d));
layout3.addChild(buttons2);
layout3.addChild(new VSpacer());
layout3.addChild(new TextWidget(null, "RadioButtons in HorizontalLayout"d));
WidgetGroup buttons3 = new HorizontalLayout();
buttons3.addChild(new RadioButton("btn1", "RadioButton 1"d));
buttons3.addChild(new RadioButton("btn2", "RadioButton 2"d));
buttons3.addChild(new RadioButton("btn3", "RadioButton 3"d));
buttons3.addChild(new RadioButton("btn4", "RadioButton 4"d));
layout3.addChild(buttons3);
layout3.addChild(new VSpacer());
layout3.addChild(new TextWidget(null, "ImageButtons HorizontalLayout"d));
WidgetGroup buttons4 = new HorizontalLayout();
buttons4.addChild(new ImageButton("btn1", "fileclose"));
buttons4.addChild(new ImageButton("btn2", "fileopen"));
buttons4.addChild(new ImageButton("btn3", "exit"));
layout3.addChild(buttons4);
layout3.addChild(new VSpacer());
layout3.addChild(new TextWidget(null, "In vertical layouts:"d));
HorizontalLayout hlayout2 = new HorizontalLayout();
hlayout2.layoutWidth(FILL_PARENT).layoutHeight(FILL_PARENT);
buttons1 = new VerticalLayout();
buttons1.addChild(new TextWidget(null, "Buttons"d));
buttons1.addChild(new Button("btn1", "Button 1"d));
buttons1.addChild(new Button("btn2", "Button 2"d));
buttons1.addChild((new Button("btn3", "Button 3 - disabled"d)).enabled(false));
buttons1.addChild(new Button("btn4", "Button 4"d));
hlayout2.addChild(buttons1);
hlayout2.addChild(new HSpacer());
buttons2 = new VerticalLayout();
buttons2.addChild(new TextWidget(null, "CheckBoxes"d));
buttons2.addChild(new CheckBox("btn1", "CheckBox 1"d));
buttons2.addChild(new CheckBox("btn2", "CheckBox 2"d));
buttons2.addChild(new CheckBox("btn3", "CheckBox 3"d));
buttons2.addChild(new CheckBox("btn4", "CheckBox 4"d));
hlayout2.addChild(buttons2);
hlayout2.addChild(new HSpacer());
buttons3 = new VerticalLayout();
buttons3.addChild(new TextWidget(null, "RadioButtons"d));
buttons3.addChild(new RadioButton("btn1", "RadioButton 1"d));
buttons3.addChild(new RadioButton("btn2", "RadioButton 2"d));
buttons3.addChild(new RadioButton("btn3", "RadioButton 3"d));
buttons3.addChild(new RadioButton("btn4", "RadioButton 4"d));
hlayout2.addChild(buttons3);
hlayout2.addChild(new HSpacer());
buttons4 = new VerticalLayout();
buttons4.addChild(new TextWidget(null, "ImageButtons"d));
buttons4.addChild(new ImageButton("btn1", "fileclose"));
buttons4.addChild(new ImageButton("btn2", "fileopen"));
buttons4.addChild(new ImageButton("btn3", "exit"));
hlayout2.addChild(buttons4);
hlayout2.addChild(new HSpacer());
WidgetGroup buttons5 = new VerticalLayout();
buttons5.addChild(new TextWidget(null, "ImageTextButtons"d));
buttons5.addChild(new ImageTextButton("btn1", "fileclose", "Close"d));
buttons5.addChild(new ImageTextButton("btn2", "fileopen", "Open"d));
buttons5.addChild(new ImageTextButton("btn3", "exit", "Exit"d));
hlayout2.addChild(buttons5);
layout3.addChild(hlayout2);
layout3.addChild(new VSpacer());
layout3.layoutWidth(FILL_PARENT).layoutHeight(FILL_PARENT);
tabs.addTab(layout3, "TAB_BUTTONS"c);
}
TableLayout table = new TableLayout("TABLE");
table.colCount = 2;
// headers
table.addChild((new TextWidget(null, "Parameter Name"d)).alignment(Align.Right | Align.VCenter));
table.addChild((new TextWidget(null, "Edit Box to edit parameter"d)).alignment(Align.Left | Align.VCenter));
// row 1
table.addChild((new TextWidget(null, "Parameter 1 name"d)).alignment(Align.Right | Align.VCenter));
table.addChild((new EditLine("edit1", "Text 1"d)).layoutWidth(FILL_PARENT));
// row 2
table.addChild((new TextWidget(null, "Parameter 2 name bla bla"d)).alignment(Align.Right | Align.VCenter));
table.addChild((new EditLine("edit2", "Some text for parameter 2"d)).layoutWidth(FILL_PARENT));
// row 3
table.addChild((new TextWidget(null, "Param 3"d)).alignment(Align.Right | Align.VCenter));
table.addChild((new EditLine("edit3", "Parameter 3 value"d)).layoutWidth(FILL_PARENT));
table.margins(Rect(10,10,10,10)).layoutWidth(FILL_PARENT);
tabs.addTab(table, "TAB_TABLE_LAYOUT"c);
tabs.addTab((new TextWidget()).id("tab5").textColor(0x00802000).text("Tab 5 contents"), "Tab 5"d);
tabs.addTab((new SampleAnimationWidget("tab6")).layoutWidth(FILL_PARENT).layoutHeight(FILL_PARENT), "TAB_ANIMATION"c);
//==========================================================================
// create Editors test tab
VerticalLayout editors = new VerticalLayout("editors");
// EditLine sample
editors.addChild(new TextWidget(null, "EditLine: Single line editor"d));
EditLine editLine = new EditLine("editline1", "Single line editor sample text");
editors.addChild(createEditorSettingsControl(editLine));
editors.addChild(editLine);
editLine.popupMenu = editPopupItem;
// EditBox sample
editors.addChild(new TextWidget(null, "EditBox: Multiline editor"d));
EditBox editBox = new EditBox("editbox1", "Some text\nSecond line\nYet another line\n\n\tforeach(s;lines);\n\t\twriteln(s);\n"d);
editBox.layoutWidth(FILL_PARENT).layoutHeight(FILL_PARENT);
dstring text = editBox.text;
for (int i = 0; i < 100; i++) {
text ~= "\n Line ";
text ~= to!dstring(i + 5);
text ~= " Some long long line. Blah blah blah.";
for (int j = 0; j <= i % 4; j++)
text ~= " The quick brown fox jumps over the lazy dog.";
}
editBox.text = text;
editBox.minFontSize(12).maxFontSize(75); // allow font zoom with Ctrl + MouseWheel
editors.addChild(createEditorSettingsControl(editBox));
editors.addChild(editBox);
editBox.popupMenu = editPopupItem;
editors.addChild(new TextWidget(null, "EditBox: additional view for the same content (split view testing)"d));
EditBox editBox2 = new EditBox("editbox2", ""d);
editBox2.content = editBox.content; // view the same content as first editbox
editBox2.minFontSize(12).maxFontSize(75); // allow font zoom with Ctrl + MouseWheel
editors.addChild(editBox2);
editors.layoutHeight(FILL_PARENT).layoutWidth(FILL_PARENT);
tabs.addTab(editors, "TAB_EDITORS"c);
//==========================================================================
contentLayout.addChild(tabs);
window.mainWidget = contentLayout;
tabs.selectTab("tab3");
} else {
window.mainWidget = (new Button()).text("sample button");
}
window.windowIcon = drawableCache.getImage("dlangui-logo1");
window.show();
//window.windowCaption = "New Window Caption";
// run message loop
return Platform.instance.enterMessageLoop();
}