C++ (Cpp) gui, oglw Examples

Programming Language: C++ (Cpp)

Class/Type: gui

Examples at hotexamples.com: 3

Here are three examples of C++ GUI programming with different package libraries:

1. Qt:
Qt is a cross-platform application framework that provides a wide range of GUI tools and widgets. Here is a simple example of a Qt-based calculator:

#include 
#include 
#include 
#include 
#include 

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);

    QWidget *window = new QWidget;
    window->setWindowTitle("Calculator");

    QGridLayout *layout = new QGridLayout;

    QLineEdit *display = new QLineEdit;
    display->setReadOnly(true);
    display->setText("0");
    layout->addWidget(display, 0, 0, 1, 4);

    const char *buttons[16] = {"7", "8", "9", "/",
                               "4", "5", "6", "*",
                               "1", "2", "3", "-",
                               "0", "C", "=", "+"};
    QPushButton *button[16];
    for (int i = 0; i < 16; i++) {
        button[i] = new QPushButton(buttons[i]);
        layout->addWidget(button[i], i/4+1, i%4);
    }

    window->setLayout(layout);
    window->show();

    return app.exec();
}

In this example, we create a window with a grid layout and a QLineEdit widget for display. We also create 16 QPushButton widgets for calculator buttons. We put all the widgets in the grid layout and show the window. When a button is clicked, we update the display accordingly.

2. GTK+:
GTK+ is a popular toolkit for creating GUIs with C++. Here's an example of a GTK+ program that displays a message dialog:

#include 

int main(int argc, char *argv[])
{
    auto app = Gtk::Application::create(argc, argv);

    Gtk::MessageDialog dialog("Hello, world!", false, Gtk::MESSAGE_INFO, Gtk::BUTTONS_OK);
    dialog.set_title("Message");
    dialog.set_modal(true);
    dialog.run();

    return 0;
}

In this example, we create an instance of Gtk::MessageDialog and set its properties, such as the message, the type, and the buttons. We also set the dialog to be modal and run it, which will block the program until the user clicks a button.

3. wxWidgets:
wxWidgets is another popular GUI toolkit that supports C++ programming. Here's an example of a wxWidgets program that creates a frame with a button:

#include 

class MyFrame : public wxFrame
{
public:
    MyFrame(const wxString& title) : wxFrame(NULL, wxID_ANY, title, wxDefaultPosition, wxSize(250, 150))
    {
        wxPanel *panel = new wxPanel(this);

        wxButton *button = new wxButton(panel, wxID_ANY, "Click me!", wxPoint(30, 30));
        button->Bind(wxEVT_BUTTON, &MyFrame::OnButtonClicked, this);
    }

private:
    void OnButtonClicked(wxCommandEvent& event)
    {
        wxMessageBox("Hello, world!", "Message", wxOK | wxICON_INFORMATION, this);
    }

    wxDECLARE_EVENT_TABLE();
};

wxBEGIN_EVENT_TABLE(MyFrame, wxFrame)
    EVT_BUTTON(wxID_ANY, MyFrame::OnButtonClicked)
wxEND_EVENT_TABLE()

class MyApp : public wxApp
{
public:
    virtual bool OnInit()
    {
        MyFrame *frame = new MyFrame("Hello world");
        frame->Show(true);

        return true;
    }
};

wxIMPLEMENT_APP(MyApp);

In this example, we create a MyFrame class that inherits from wxFrame. We create a wxPanel and a wxButton inside the frame and bind an event handler to the button click event. We also create a MyApp class that inherits from wxApp and define its OnInit method to create and show the frame. Finally, we use the wxIMPLEMENT_APP macro to initialize the application with MyApp. When the button is clicked, we show a message box with a message.

C++ (Cpp) gui - 3 examples found. These are the top rated real world C++ (Cpp) examples of gui from package oglw extracted from open source projects. You can rate examples to help us improve the quality of examples.

Frequently Used Methods

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widget_ptr(2)

get_current_text(1)

hide(1)

Example #1

Show file

File: search_engines_plugin.cpp Project: catch22/colibri

bool search_engine_controller::on_enter(gui &gui)
{
  // format URL
  wchar_t url[1024];
  _snwprintf(url, 1023, m_url_template.c_str(), gui.get_current_text());
  url[1023]=0;

  // open URL
  bool ok=launch(url);
  gui.hide();
  return ok;
}

Example #2

Show file

widget_ptr create(const variant& v, game_logic::formula_callable* e)
{
	if(v.is_callable()) {
		widget_ptr w = v.try_convert<gui::widget>();
		ASSERT_LOG(w != NULL, "Error converting widget from callable.");
		return w;
	}
	ASSERT_LOG(v.is_map(), "TYPE ERROR: widget must be specified by a map, found: " << v.to_debug_string());
	std::string wtype = v["type"].as_string();
	if(wtype == "animation_widget") {
		return widget_ptr(new gui::animation_widget(v,e));
#ifndef NO_EDITOR
	} else if(wtype == "animation_preview") {
		return widget_ptr(new gui::animation_preview_widget(v,e));
#endif
	} else if(wtype == "border_widget") {
		return widget_ptr(new gui::border_widget(v,e));
	} else if(wtype == "button") {
		return widget_ptr(new gui::button(v,e));
	} else if(wtype == "checkbox") {
		return widget_ptr(new gui::checkbox(v,e));
	} else if(wtype == "dialog") {
		return widget_ptr(new gui::dialog(v,e));
#ifndef NO_EDITOR
	} else if(wtype == "drag_widget") {
		return widget_ptr(new gui::drag_widget(v,e));
#endif
	} else if(wtype == "graphical_font_label") {
		return widget_ptr(new gui::graphical_font_label(v,e));
	} else if(wtype == "grid") {
		return widget_ptr(new gui::grid(v,e));
	} else if(wtype == "image") {
		return widget_ptr(new gui::image_widget(v,e));
	} else if(wtype == "section") {
		return widget_ptr(new gui::gui_section_widget(v,e));
	} else if(wtype == "key_button") {
		return widget_ptr(new gui::key_button(v,e));
	} else if(wtype == "label") {
		return widget_ptr(new gui::label(v,e));
	} else if(wtype == "poly_line_widget") {
		return widget_ptr(new gui::poly_line_widget(v,e));
	} else if(wtype == "rich_text_label") {
		return widget_ptr(new gui::rich_text_label(v,e));
	} else if(wtype == "tileset_preview") {
		return widget_ptr(new gui::preview_tileset_widget(v,e));
	} else if(wtype == "scrollbar") {
		return widget_ptr(new gui::scrollbar_widget(v,e));
	} else if(wtype == "slider") {
		return widget_ptr(new gui::slider(v,e));
	} else if(wtype == "text_editor") {
		return widget_ptr(new gui::text_editor_widget(v,e));
	} else if(wtype == "progress") {
		return widget_ptr(new gui::progress_bar(v, e));
	} else if(wtype == "selector") {
		return widget_ptr(new gui::selector_widget(v, e));
	} else if(wtype == "object") {
		return widget_ptr(new gui::custom_object_widget(v, e));
	} else if(wtype == "bar") {
		return widget_ptr(new gui::bar_widget(v, e));
	} else if(wtype == "color_picker") {
		return widget_ptr(new gui::color_picker(v, e));
	} else if(wtype == "layout") {
		return widget_ptr(new gui::layout_widget(v, e));
	} else if(wtype == "file_chooser") {
		return widget_ptr(new gui::file_chooser_dialog(v, e));
#if defined(USE_ISOMAP)
	} else if(wtype == "view3d") {
		return widget_ptr(new gui::view3d_widget(v, e));
#endif
	//} else if(wtype == "scrollable") {
	//} else if(wtype == "widget") {
	} else {
		ASSERT_LOG(true, "Unable to create a widget of type " << wtype);
		return widget_ptr();
	}
}

Example #3

Show file

widget_ptr create(const variant& v, game_logic::formula_callable* e)
{
	ASSERT_LOG(v.is_map(), "TYPE ERROR: widget must be specified by a map");	
	std::string wtype = v["type"].as_string();
	std::cerr << "Widget Factory creating widget of type: " << wtype << std::endl;
	if(wtype == "animation_preview") {
		return widget_ptr(new gui::animation_preview_widget(v,e));
	} else if(wtype == "animation_widget") {
		return widget_ptr(new gui::animation_widget(v,e));
	} else if(wtype == "border_widget") {
		return widget_ptr(new gui::border_widget(v,e));
	} else if(wtype == "button") {
		return widget_ptr(new gui::button(v,e));
	} else if(wtype == "checkbox") {
		return widget_ptr(new gui::checkbox(v,e));
	} else if(wtype == "dialog") {
		return widget_ptr(new gui::dialog(v,e));
	} else if(wtype == "drag_widget") {
		return widget_ptr(new gui::drag_widget(v,e));
	} else if(wtype == "graphical_font_label") {
		return widget_ptr(new gui::graphical_font_label(v,e));
	} else if(wtype == "grid") {
		return widget_ptr(new gui::grid(v,e));
	} else if(wtype == "image") {
		return widget_ptr(new gui::image_widget(v,e));
	} else if(wtype == "section") {
		return widget_ptr(new gui::gui_section_widget(v,e));
	} else if(wtype == "key_button") {
		return widget_ptr(new gui::key_button(v,e));
	} else if(wtype == "label") {
		return widget_ptr(new gui::label(v,e));
	} else if(wtype == "poly_line_widget") {
		return widget_ptr(new gui::poly_line_widget(v,e));
	} else if(wtype == "tileset_preview") {
		return widget_ptr(new gui::preview_tileset_widget(v,e));
	} else if(wtype == "scrollbar") {
		return widget_ptr(new gui::scrollbar_widget(v,e));
	} else if(wtype == "slider") {
		return widget_ptr(new gui::slider(v,e));
	} else if(wtype == "text_editor") {
		return widget_ptr(new gui::text_editor_widget(v,e));
	//} else if(wtype == "scrollable") {
	//} else if(wtype == "widget") {
	} else {
		ASSERT_LOG(true, "Unable to create a widget of type " << wtype);
		return widget_ptr();
	}
}