与SFML一起使用wxWidgets时出错

Question

此错误与wxWidgets 3.1.5，和SFML 2.5.1我有以下代码:

(main.cpp): -

#include <SFML/Graphics.hpp>
#include <wx/wx.h>
#include "wxSfmlCanvas.h"
#include "main.h"

TestFrame::TestFrame() :
wxFrame(NULL, wxID_ANY, "SFML 2.5 w/ wxWidgets 3.1", wxDefaultPosition, wxSize(650, 490))
{
mCanvas = new TestSfmlCanvas(this, wxID_ANY, wxPoint(5, 25), wxSize(640, 480));
// Also add a button.
wxButton *button = new wxButton(
this, 
wxID_ANY, 
wxT("Toggle Size"),
wxPoint(5, 5)
);
button->Bind(wxEVT_BUTTON, [&](wxCommandEvent& arg) -> void {
mCanvas->toggleSize();
});

wxBoxSizer* mainSizer =  new wxBoxSizer( wxVERTICAL );

mainSizer->Add(mCanvas, 6, wxALIGN_TOP | wxEXPAND);
mainSizer->Add(button, 0, wxALIGN_RIGHT | wxALIGN_BOTTOM);
SetSizerAndFit(mainSizer);
}
TestSfmlCanvas::TestSfmlCanvas(
wxWindow*  Parent,
wxWindowID Id,
wxPoint&   Position,
wxSize&    Size,
long       Style
) : wxSfmlCanvas(Parent, Id, Position, Size, Style),
mLarge(false)
{
// Load a texture and create a sprite.
mTexture.loadFromFile("data/ball.png");
mSprite = std::make_unique<sf::Sprite>(mTexture);
}
void 
TestSfmlCanvas::OnUpdate()
{
clear(sf::Color(64, 196, 196));
draw(*mSprite);
}
void
TestSfmlCanvas::toggleSize()
{
if (mLarge) {
mSprite->setScale(sf::Vector2f(1.2f, 1.2f));
} 
else {
mSprite->setScale(sf::Vector2f(0.5f, 0.5f));
}
mLarge = !mLarge;
}
IMPLEMENT_APP(TestApplication);

(and main.h):-

#pragma once
#include <memory>
#include <SFML/Graphics.hpp>
#include <wx/wx.h>
#include <string>
#include "wxSfmlCanvas.h"
// Our overridden class that does some SFML drawing.
class TestSfmlCanvas : public wxSfmlCanvas
{
public:
TestSfmlCanvas(
wxWindow*  Parent,
wxWindowID Id,
wxPoint&   Position,
wxSize&    Size,
long       Style = 0
);
void toggleSize();
protected:
void OnUpdate() override;
private:
sf::Texture mTexture;
std::unique_ptr<sf::Sprite> mSprite;
bool mLarge;
};

// wx Frame to contain the main canvas control.  Can have extra controls added to it as desired.
class TestFrame : public wxFrame
{
public :
TestFrame();
protected:
TestSfmlCanvas* mCanvas;
};
// Main wx Application instance.
class TestApplication : public wxApp
{
private :
virtual bool OnInit()
{
// Create the main window
TestFrame* MainFrame = new TestFrame;
MainFrame->Show();
return true;
}
};

(wxSFMLCanvas.h): -

#pragma once
#include <SFML/Graphics.hpp>
#include <wx/wx.h>
#include <string>
class wxSfmlCanvas : public wxControl, public sf::RenderWindow
{
public:
wxSfmlCanvas(wxWindow* Parent = nullptr,
wxWindowID Id = -1,
//const wxPoint& Position = wxDefaultPosition,
const wxSize& Size = wxDefaultSize,
long Style = 0);
virtual ~wxSfmlCanvas();
protected:
virtual void OnUpdate();
void OnIdle(wxIdleEvent&);
void OnPaint(wxPaintEvent&);
void OnEraseBackground(wxEraseEvent&);
void OnSize(wxSizeEvent&);
DECLARE_EVENT_TABLE()
};

(wxSFMLCanvas.cpp): -

#include "wxSfmlCanvas.h"
#include <wx/wx.h>
#include <string>

BEGIN_EVENT_TABLE(wxSfmlCanvas, wxControl)
EVT_PAINT(wxSfmlCanvas::OnPaint)
EVT_IDLE(wxSfmlCanvas::OnIdle)
EVT_ERASE_BACKGROUND(wxSfmlCanvas::OnEraseBackground)
EVT_SIZE(wxSfmlCanvas::OnSize)
END_EVENT_TABLE()
#ifdef __WXGTK__
#include <string>
#include <gdk/gdkx.h>
#include <gtk/gtk.h>
#include <wx/gtk/win_gtk.h>
#endif
wxSfmlCanvas::wxSfmlCanvas(wxWindow* Parent, 
wxWindowID Id, 
const wxPoint& Position, 
const wxSize& Size, 
long Style) :
wxControl(Parent, Id, Position, Size, Style)
{
#ifdef __WXGTK__

#else

sf::RenderWindow::create(GetHandle());
#endif
}
void wxSfmlCanvas::OnIdle(wxIdleEvent&)
{
// Send a paint message when the control is idle, to ensure maximum framerate
Refresh();
}
wxSfmlCanvas::~wxSfmlCanvas()
{
}
void wxSfmlCanvas::OnUpdate()
{
}
void wxSfmlCanvas::OnEraseBackground(wxEraseEvent&)
{
}
void wxSfmlCanvas::OnSize(wxSizeEvent& args)
{
// Set the size of the sfml rendering window
setSize(sf::Vector2u(args.GetSize().x, args.GetSize().y));
// Also adjust the viewport so that a pixel stays 1-to-1.
setView(sf::View(sf::FloatRect(0, 0, args.GetSize().x, args.GetSize().y)));
}
void wxSfmlCanvas::OnPaint(wxPaintEvent&)
{
// Prepare the control to be repainted
wxPaintDC Dc(this);
// Let the derived class do its specific stuff
OnUpdate();
// Display on screen
display();
}

使用这段代码，我得到了以下编译错误:Severity Code Description Project File Line Suppression State Error C4996 '_wgetenv': This function or variable may be unsafe. Consider using _wdupenv_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details. ae D:wxwidgincludewxwxcrt.h 1050

和100个类似的人。为什么?我做错了什么?wxWidgets是正确构建的，SFML和wx单独工作很好，但是当结合使用时，由于某种原因会发生此错误。

Answer 1

您显示的消息根本不是错误，它们是静态分析器警告，可以安全地忽略，即"不安全"。在wxWidgets中，函数不会以不安全的方式使用。