Messages

I use SFML 2.3.1 builded from the git repo.

And I am running on Yosemite 10.10.4.

So with a little bit of detail :

I used the FindSFML module to detect SFML (I took the module from the TGUI repo). It was the source of the bug. I solved the problem by doing the library linking directly :

Code Select Expand


target_link_libraries(brain
sfml-system
sfml-window
sfml-graphics)


But you need to have SFML installed system wide.

But know I am having an issue linking TGUI :

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/usr/local/lib/libtgui.so: undefined reference to `sf::String::substring(unsigned int, unsigned int) const'
/usr/local/lib/libtgui.so: undefined reference to `sf::Image::~Image()'
collect2: error: ld returned 1 exit status


So I am trying to switch on TGUI v0.7-dev but I am having an error building it on my mac. :

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$ make
[  2%] Building CXX object src/TGUI/CMakeFiles/tgui.dir/Widget.cpp.o
/libs/tgui/src/TGUI/Widget.cpp:451:16: error: chosen constructor is
      explicit in copy-initialization
        return {};
               ^~
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/map:838:14: note:
      constructor declared here
    explicit map(const key_compare& __comp = key_compare())
             ^
1 error generated.
make[2]: *** [src/TGUI/CMakeFiles/tgui.dir/Widget.cpp.o] Error 1
make[1]: *** [src/TGUI/CMakeFiles/tgui.dir/all] Error 2
make: *** [all] Error 2


I found the origin of the problem.
It was the SFML CMake module.

Here is the example code :

Code (cpp) Select Expand

#include <SFML/Graphics.hpp>

int main()
{
    sf::RenderWindow window(sf::VideoMode(200, 200), "SFML works!");
    sf::CircleShape shape(100.f);
    shape.setFillColor(sf::Color::Green);

    while (window.isOpen())
    {
        sf::Event event;
        while (window.pollEvent(event))
        {
            if (event.type == sf::Event::Closed)
                window.close();
        }

        window.clear();
        window.draw(shape);
        window.display();
    }

    return 0;
}

Yes i am using the the v06.

But I didn't need to tweak anything to build it. Just had to build SFML from source and then i followed the TGUI linux tutorial.

I narrowed my problem down.
I started by doing the SFML Linux tutorial :
https://www.sfml-dev.org/tutorials/2.3/start-linux.php
It works perfectly

I changed the main of my project with the example code. And it still get the error !

I don't understand why it doesn't work. It almost the since the only difference is I use CMake to build the example.

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cmake_minimum_required(VERSION 2.6)

project(Brain C CXX)

# Fichier de sortie
set(EXECUTABLE_OUTPUT_PATH build/${CMAKE_BUILD_TYPE})
set(LIBRARY_OUTPUT_PATH lib/${CMAKE_BUILD_TYPE})

# Compiling in C++11. Settings compiler flags.
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pthread -g")

# Detect Libs
set(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/CMake/Modules" ${CMAKE_MODULE_PATH})

find_package(SFML 2 REQUIRED system window graphics)
if(NOT SFML_FOUND)
    message(FATAL_ERROR "Could not find SFML")
endif()

add_subdirectory(Brain)


and the subdirectory CMake

Code Select Expand


set(SOURCES
    main.cpp
)

add_executable(brain ${SOURCES})
target_link_libraries(brain
    ${SFML_LIBRARIES}
)


That's really weird.

I had a working version of SFML before I added TGUI. Looking at git history to see what I changed.

Thanks !

Thanks !

I am having an issue integrating the callback in a class :

Code (cpp) Select Expand


#ifndef GUI_HPP
#define GUI_HPP

#include <TGUI/TGUI.hpp>
#include "manage_state.hpp"

class SystemGui
{
public:
    SystemGui(ManageState &manage_state);
    void loadWidgets(tgui::Gui& gui);

private:
    void linkStartButton(tgui::Button::Ptr button);
    ManageState &_manage_state;

};

#endif // GUI_HPP

//////////////////////////////////////////////////
#include "gui.hpp"

SystemGui::SystemGui(ManageState &manage_state) :
    _manage_state{manage_state}
{}

void SystemGui::loadWidgets( tgui::Gui& gui )
{
    // Create the login button
    tgui::Button::Ptr startbutton(gui);
    startbutton->load("./widgets/Black.conf");
    startbutton->setSize(260, 60);
    startbutton->setPosition(270, 300);
    startbutton->setText("Start");
    startbutton->bindCallback(std::bind(linkStartButton, startbutton), tgui::Button::LeftMouseClicked);
    startbutton->bindCallback(tgui::Button::LeftMouseClicked);
    startbutton->setCallbackId(1);
}

void SystemGui::linkStartButton(tgui::Button::Ptr button)
{
    _manage_state.updateStart();
    if (button->getText() == "Start")
    {
        button->setText("Stop");
    } else {
        button->setText("Start");
    }
}


I get this error :

Code Select Expand


error: reference to non-static member function must
      be called
    startbutton->bindCallback(std::bind(linkStartButton, startbutton), tgui::Button::LeftMous...


I can't manage to find the solution.

Sincerely,

Hi,

Does TGUI supports raspberry ?
I managed to build it but when i launch my app it stops with this error :

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Failed to create window
X Error of failed request:  BadWindow (invalid Window parameter)
  Major opcode of failed request:  3 (X_GetWindowAttributes)
  Resource id in failed request:  0x140000d
  Serial number of failed request:  65
  Current serial number in output stream:  66


Sincerely

ok,

I saw that solution in the V05 full example but since it wasn't in the V06 i thought it was deprecated.

When i use this solution :

Code Select Expand


startbutton->bindCallback(std::bind(func, startbutton), tgui::Button::LeftMouseClicked);


the callback loop doesn't work anymore :

Code Select Expand


tgui::Callback callback;
    while (_gui.pollCallback(callback))
    {
        if (callback.id == 1)
        {
            cout<<"hello"<<endl;

        }
}


Nope it doesn't :

Code Select Expand


error: no member named 'setText' in 'tgui::Widget'
            _gui.get("startbutton")->setText("Stop");


Your solution solved it thank you.

Hi,

I am having trouble finding a solution to my problem. I would like to change the state of my button when it's triggered. But I can't find the way to do it.

Code Select Expand


tgui::Callback callback;
    while (_gui.pollCallback(callback))
    {
        if (callback.id == 1)
        {
            _gui.get("startbutton")->setText("Stop");

        }
    }


Here is the widget :

Code Select Expand


// Create the login button
    tgui::Button::Ptr startbutton(gui, "startbutton");
    startbutton->load("./widgets/Black.conf");
    startbutton->setSize(260, 60);
    startbutton->setPosition(270, 300);
    startbutton->setText("Start");
    startbutton->bindCallback(tgui::Button::LeftMouseClicked);
    startbutton->setCallbackId(1);


Thanks for your help,