MFC and SFML Window problem

[xumepoc]

Hi everyone.
I have a CDialog with SFML RenderWindow created in a separated class. Everything is working OK, with the exception of two things.

1. Because I want to keep the CDialog events instead of the SFML I have problem that I loose the focus for mouse wheel event. I can use the mouse and the buttons, but the mouse wheel event is not triggered until I use the right button and click on the menu on the Windows bar where the programs icon is. And after I click outside of the  program I loose the focus again. Is there a workaround this?

2. How can I resize SFML window. I use custom events to resize the CDialog window using SetWindowPos().

[xumepoc]

Any one?

[eXpl0it3r]

I highly doubt anyone is still seriously working with MFC...

[xumepoc]

Using MFC is not the problem here.

setSize() is not doing anything on the RenderWindow when set. I can't make it change.

The focus is also strange, because I can use all othe mouse functions, except the mouse wheel.

[Laurent]

setSize() works only on top-level windows.

[xumepoc]

So there is no way to resize the RenderWindow?

[Laurent]

If it is embedded inside a MFC control, you can resize the MFC control itself.

[xumepoc]

I am doing that, but it has no effect. I am passing a HWND from the CDialog in order to create the RenderWindow. I then resize the CDialog window and pass the size to the RenderWindow's setSize() too. The result it that the CDialog is resized, but the drawing "stops" in the old size of the RenderWindow.

[Laurent]

This is not supposed to happen, the SFML window should automatically adjust to the new size.

[xumepoc]

Well its either not working correctly or I am not doing it correctly. I will post a pseudo code tomorrow to show you what I am doing.

[Jesper Juhl]

... I will post a pseudo code tomorrow to show you what I am doing.

Do better than that and post a "complete and minimal" example that shows the problem.
See these links:
 https://github.com/SFML/SFML/wiki/FAQ#tr-grl-minimal
 http://en.sfml-dev.org/forums/index.php?topic=5559.msg36368#msg36368

[xumepoc]

Wouldn't that will be a bit hard, because the problem is exactly in the use of CDialog and SFML, so it can't be as minimal as described in the links.

[Laurent]

There's always a minimal code that reproduces the problem.

If all you need is a CDialog with a sf::RenderWindow inside, and call SetWindowPos on it, you won't need thousands of lines of code.

[xumepoc]

Of course not, that is why I said I will post a pseudo code that will include only the relative parts of the program that are in connection to the problem. 

[xumepoc]

Here is the code sample, I am not including the CDialog in its full minimal form because it will take too much space, but I can create a minimalistic project and uploaded for anyone who wants to test it.
CDialog:

This is the defined _SFML variable

SFML_CL _SFML

This is the pseudo code of the main CDialog class

BOOL CClassTestsDlg::OnInitDialog()
{
 CDialog::OnInitDialog();

 FIRSTRESIZE = true;
 HWND hWND = GetSafeHwnd();

 _SFML.Initialize(hWND);

return TRUE;
}
void CClassTestsDlg::OnSize(UINT nType, int cx, int cy){
 if(FIRSTRESIZE){
      SetWindowPos(&CWnd::wndTopMost , 0, 0, 500, 500 ,SWP_SHOWWINDOW|SWP_NOZORDER );
      FIRSTRESIZE = false;
   }
 CDialog::OnSize(nType, cx, cy);
}
void CClassTestDlg::ChangeSize()
{
 SetWindowPos(&CWnd::wndTopMost ,0,0,700,700,SWP_SHOWWINDOW|SWP_NOZORDER);
}
 

SFML_CL:

#pragma once
#include <SFML/Graphics.hpp>


class SFML_CL
{
public:
        SFML_CL(void);
        virtual ~SFML_CL(void);
        void Initialize(HWND hWnd);
        void Render();

protected:
        HWND hWND;
        sf::RenderWindow *ttl2D;
     sf::Font font;
     COLORREF ColorBG;
};

SFML_CL::SFML_CL(void)
{
        ttl2D = NULL;
    ColorBG = RGB(90,90,90);
}

SFML_CL::~SFML_CL(void)
{
        delete ttl2D;
}
void SFML_CL::Initialize(HWND hWnd)
{
        hWND = hWnd;
        sf::ContextSettings ws;
        ws.antialiasingLevel = 8;

        ttl2D = new sf::RenderWindow( hWND,ws );
        ttl2D->setVerticalSyncEnabled(true);

        font.loadFromFile("res/Arial.otf");
}
void SFML_CL::Render()
{
        sf::Color color(GetRValue(ColorBG ),GetGValue(ColorBG ),GetBValue(ColorBG ),255);
        ttl2D->clear(color);

    sf::Text text;
        text.setCharacterSize(13);
        text.setColor(sf::Color::White);
        text.setPosition(20,80);

    CRect rect;
        GetClientRect(hWND,rect);
        CString fp;
        fp.Format("%d (%d : %d %d %d %d)",ttl2D->getSize().x,ttl2D->getSize().y,rect.left,rect.top,rect.Width(),rect.Height());
        text.setString(fp.GetBuffer());
        fp.ReleaseBuffer();
        text.setPosition(20,150);
        ttl2D->draw(text);

        ttl2D->display();
}

This will result in a constant values for ttl2D->getSize().x and ttl2D->getSize().y, but the rect coordinates will be updated accordingly