Trying to display text returns me an error

[Canvas]

Hey guys, I'm trying to display some text in my game but I keep getting the error displayed in the image I have attached coming up, the font is not null, nor the character size, nor the test or colour, what am I doing wrong here?

Here is the render code

//Objects and text
    for (int i = 0; i < DisplayObjects.size(); i++)
    {
        auto object = DisplayObjects.at(i);
        Window.draw(object->GetSprite());
        if (object->IsTextObject())
        {
            Window.draw(object->GetText());
        }
    }

Also here is the code I have which sets up the text

void DisplayObject::SetText(std::string setText)
{
        displayText.setFont(font);
        displayText.setColor(sf::Color(0, 0, 0));
        displayText.setCharacterSize(24);
        displayText.setString(text);
        text = setText;
        textObject = true;
}

[Nexus]

Please read this.

And are you sure you want to copy the other object?

auto object = DisplayObjects.at(i);

Same applies for the string parameter. Also, at() is a really awful function to use during iteration. You should work with iterators, indices are for random access.

[Canvas]

How would i build an iterator over my vector? also the copying of the object was there just for debugging

[Jesper Juhl]

for (const auto& object : DisplayObjects) {
}

Would be the simple option.

Or if you want iterators

for (auto it = begin(DisplayObjects); it != end(DisplayObjects); ++it) {
}
 

And there are more options.