Demos: Add a HelloWorld2 demo.

This is a simple test app with its UI generated from a VisualBuilder form.
The name is probably silly, but who cares. :^)

Demos/HelloWorld2/.gitignore

@@ -0,0 +1 @@
+UI_*.h

Demos/HelloWorld2/HelloWorld2.frm

@@ -0,0 +1 @@
+{"name":"HelloWorld2","widgets":[{"name":"w1","tooltip":null,"backcolor":"#d4d0c8ff","forecolor":"#000000ff","text":"Hello world!","class":"GLabel","autofill":true,"enabled":true,"visible":true,"x":5,"height":26,"y":5,"width":121},{"name":"w2","tooltip":null,"backcolor":"#d4d0c8ff","forecolor":"#000000ff","text":"Lefty","class":"GButton","autofill":false,"enabled":true,"visible":true,"x":5,"height":26,"y":40,"width":51},{"name":"w3","tooltip":null,"backcolor":"#d4d0c8ff","forecolor":"#000000ff","text":"Righty","class":"GButton","autofill":false,"enabled":true,"visible":true,"x":80,"height":26,"y":40,"width":51},{"name":"w4","enabled":true,"forecolor":"#000000ff","checked":false,"autofill":false,"x":150,"tooltip":null,"height":26,"width":91,"y":5,"class":"GCheckBox","text":"Awesome","backcolor":"#d4d0c8ff","visible":true},{"name":"w5","enabled":true,"forecolor":"#000000ff","checked":false,"autofill":false,"x":150,"tooltip":null,"height":26,"width":51,"y":30,"class":"GCheckBox","text":"Cool","backcolor":"#d4d0c8ff","visible":true}]}

Demos/HelloWorld2/Makefile

@@ -0,0 +1,27 @@
+include ../../Makefile.common
+
+OBJS = \
+    main.o
+
+APP = HelloWorld2
+
+DEFINES += -DUSERLAND
+
+all: $(APP)
+
+main.cpp: UI_HelloWorld2.h
+
+UI_HelloWorld2.h: HelloWorld2.frm
+	../../DevTools/FormCompiler/FormCompiler $< > $@
+
+$(APP): $(OBJS)
+	$(LD) -o $(APP) $(LDFLAGS) $(OBJS) -lgui -lcore -lc
+
+.cpp.o:
+	@echo "CXX $<"; $(CXX) $(CXXFLAGS) -o $@ -c $<
+
+-include $(OBJS:%.o=%.d)
+
+clean:
+	@echo "CLEAN"; rm -f $(APP) $(OBJS) *.d
+

Demos/HelloWorld2/main.cpp

@@ -0,0 +1,26 @@
+#include <LibGUI/GApplication.h>
+#include <LibGUI/GBoxLayout.h>
+#include <LibGUI/GButton.h>
+#include <LibGUI/GLabel.h>
+#include <LibGUI/GWidget.h>
+#include <LibGUI/GWindow.h>
+#include "UI_HelloWorld2.h"
+
+int main(int argc, char** argv)
+{
+    GApplication app(argc, argv);
+
+    auto* window = new GWindow;
+    window->set_rect(100, 100, 240, 160);
+    window->set_title("Hello World!");
+
+    auto* ui = new UI_HelloWorld2;
+    window->set_main_widget(ui->main_widget);
+
+    ui->w3->on_click = [&](auto&) {
+        app.quit();
+    };
+
+    window->show();
+    return app.exec();
+}

Kernel/build-root-filesystem.sh

@@ -77,6 +77,7 @@ cp ../Applications/TextEditor/TextEditor mnt/bin/TextEditor
 cp ../Applications/PaintBrush/PaintBrush mnt/bin/PaintBrush
 cp ../Applications/QuickShow/QuickShow mnt/bin/QuickShow
 cp ../Demos/HelloWorld/HelloWorld mnt/bin/HelloWorld
+cp ../Demos/HelloWorld2/HelloWorld2 mnt/bin/HelloWorld2
 cp ../Demos/RetroFetch/RetroFetch mnt/bin/RetroFetch
 cp ../Demos/WidgetGallery/WidgetGallery mnt/bin/WidgetGallery
 cp ../Demos/Fire/Fire mnt/bin/Fire
@@ -94,6 +95,7 @@ echo -n "installing shortcuts... "
 ln -s Downloader mnt/bin/dl
 ln -s FileManager mnt/bin/fm
 ln -s HelloWorld mnt/bin/hw
+ln -s HelloWorld2 mnt/bin/hw2
 ln -s IRCClient mnt/bin/irc
 ln -s Minesweeper mnt/bin/ms
 ln -s Shell mnt/bin/sh

Kernel/makeall.sh

@@ -40,6 +40,7 @@ build_targets="$build_targets ../Games/Minesweeper"
 build_targets="$build_targets ../Games/Snake"
 build_targets="$build_targets ../Shell"
 build_targets="$build_targets ../Demos/HelloWorld"
+build_targets="$build_targets ../Demos/HelloWorld2"
 build_targets="$build_targets ../Demos/RetroFetch"
 build_targets="$build_targets ../Demos/WidgetGallery"
 build_targets="$build_targets ../Demos/Fire"