图片不显示，关闭时出现错误 --> Debug Assertion Failed！ 表达式：is_block_type_valid(header->_block_use)

Question

The picture not showing and when I close, error appear. I can't figure it out, maybe a problem with pointers.

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Menu.h

#include "Picture.h"

class menu
{
    const int menuPictCount;
    picture* menuPicture[];
public:
    menu(sf::RenderWindow& usableArea);
    ~menu();
    void draw();
    void posСorrection();
    void shineButton(sf::Color color);
};

---

Menu.cpp <--------- the problem is here

menu::menu(sf::RenderWindow& usableArea) : menuPictCount(4)
{
    this->menuPicture[this->menuPictCount];

    //background
    this->menuPicture[0] = new picture(usableArea, "image/background/0.png");

    //buttons
    this->menuPicture[1] = new picture(usableArea, "image/menu/newgame.png");
    this->menuPicture[1] = new picture(usableArea, "image/menu/continue.png");
    this->menuPicture[3] = new picture(usableArea, "image/menu/exit.png");
}
menu::~menu()
{
    for (size_t i = 0; i < this->menuPictCount; i++) delete this->menuPicture[i];
    delete[] menuPicture;
}
void menu::draw()
{
    for (size_t i = 0; i < this->menuPictCount; i++) this->menuPicture[i]->draw();
}
void menu::posСorrection()
{
    const int buttonsCount = this->menuPictCount - 1;

    if (buttonsCount % 2 == 0)
    {
        int indexCenterOver = buttonsCount / 2;
        int indexCenterUnder = indexCenterOver + 1;
        this->menuPicture[indexCenterOver]->putCenterOver();
        this->menuPicture[indexCenterUnder]->putCenterUnder();

        for (size_t i = indexCenterOver - 1; i > 0; i--)
        {
            this->menuPicture[i]->putOverObj(*this->menuPicture[i + 1]);
        }
        for (size_t i = indexCenterUnder + 1; i <= buttonsCount; i++)
        {
            this->menuPicture[i]->putUnderObj(*this->menuPicture[i - 1]);
        }
    }
    else
    {
        const int indexCenter = buttonsCount / 2 + 1;

        this->menuPicture[indexCenter]->putCenter();

        for (size_t i = indexCenter - 1; i > 0; i--)
        {
            this->menuPicture[i]->putOverObj(*this->menuPicture[i + 1]);
        }
        for (size_t i = indexCenter + 1; i <= buttonsCount; i++)
        {
            this->menuPicture[i]->putUnderObj(*this->menuPicture[i - 1]);
        }
    }
}
void menu::shineButton(sf::Color color)
{
    /*for (size_t i = 0; i <= this->buttons.GetCount(); i++)
    {
        if (this->buttons.GetElement(i)->data.trackContainsCursor())
            if (this->buttons.GetElement(i)->data.getColor() != color)
            {
                this->buttons.GetElement(i)->data.setColor(color);
            }
        if (!this->buttons.GetElement(i)->data.trackContainsCursor())
            if (this->buttons.GetElement(i)->data.getColor() == color)
            {
                this->buttons.GetElement(i)->data.setColor(color);
            }
    }*/
} ```


  [1]: https://i.stack.imgur.com/uNY8B.png

Answer 1

Instead of

picture* menuPicture[];

use

std::vector<std::unique_ptr<picture>> menuPicture;

And in menu constructor instead of doing this:

this->menuPicture[this->menuPictCount];

do this:

this->menuPicture.resize(this->menuPictCount);

Edit: Of course remove also delete s from destructor. std::vector and std::unique_ptr will clean up after themselves.

If number of pictures in menu is constant (like in your constructor) you can change menuPicture declaration to:

std::array<std::unique_ptr<picture>, 4> menuPicture;

but then you can't call resize on it.