Errors when calling standard functions?

Question

C++ / C#

Here is the code:

/*
This is si in
*/
#include "keyboard.h"
PMSG Keyboard::msg_;
GLboolean Keyboard::fullscreen;
LPARAM Keyboard::lparam_;
WPARAM Keyboard::wparam_;
HGLRC Keyboard::hrc;
HDC Keyboard::hdc;
HWND Keyboard::hwnd;
HINSTANCE Keyboard::hinstance;
int Keyboard::x,Keyboard::y;
Keyboard::Keyboard()
{
  msg_=new MSG();
}
GLvoid Keyboard::KillWindow()
{
  if(fullscreen)
  {
    ChangeDisplaySettings(0,0);
    ShowCursor(true);
  }
  if(hrc)
  {
    if(!wglMakeCurrent(0,0))
    {
      MessageBox(0, L"Release failed 1", L"SHUTDOWN ERROR",MB_OK|MB_ICONINFORMATION);
    }
    if(!wglDeleteContext(hrc))
    {
      MessageBox(0, L"Release failed 2", L"SHUTDOWN ERROR",MB_OK|MB_ICONINFORMATION);
    }
  }
  if(hdc && !ReleaseDC(hwnd,hdc))
  {
    MessageBox(0, L"Release failed 3", L"SHUTDOWN ERROR",MB_OK|MB_ICONINFORMATION);
  }
  if(!UnregisterClass(L"My Window",hinstance))
  {
  }
  return;
}
GLboolean Keyboard::CreateWindow_(wchar_t *title,GLint width,GLint height,GLint bits,GLboolean fullscreenflag)
{
  PWNDCLASS wc=new WNDCLASS();
  hinstance=GetModuleHandle(0);
  wc->style=CS_HREDRAW|CS_VREDRAW|CS_OWNDC;
  wc->lpfnWndProc=(WNDPROC)WndProc;
  wc->cbClsExtra=0;
  wc->cbWndExtra=0;
  wc->hInstance=hinstance;
  wc->hIcon=LoadIcon(0,IDI_WINLOGO);
  wc->hCursor=LoadCursor(0,IDC_ARROW);
  wc->hbrBackground=0;
  wc->lpszMenuName=0;
  wc->lpszClassName= L"My Window";
  if(!RegisterClass(wc))
  {
    MessageBox(0, L"Failed reg crea", L"ERROR",MB_OK|MB_ICONEXCLAMATION);
    return false;
  }
  fullscreen=fullscreenflag;
  if(fullscreen)
  {
    PDEVMODE dmscreensettings=new DEVMODE();
    memset(dmscreensettings,0,sizeof(dmscreensettings));
    dmscreensettings->dmSize=sizeof(dmscreensettings);
    dmscreensettings->dmPelsWidth=width;
    dmscreensettings->dmPelsHeight=height;
    dmscreensettings->dmBitsPerPel=bits;
    dmscreensettings->dmFields=DM_BITSPERPEL|DM_PELSWIDTH|DM_PELSHEIGHT;
    if(ChangeDisplaySettings(dmscreensettings,CDS_FULLSCREEN)!=DISP_CHANGE_SUCCESSFUL)
    {
      if(MessageBox(0, L"Not support fulscreen", L"HINT",MB_YESNO|MB_ICONEXCLAMATION)==IDYES)
        fullscreen=false;
      else
      {
        MessageBox(0, L"Prog close", L"ERROR",MB_OK|MB_ICONSTOP);
        return false;
      }
    }
  }
  DWORD dwexstyle,dwstyle;
  if(fullscreen)
  {
    dwexstyle=WS_EX_APPWINDOW;
    dwstyle=WS_POPUP;
    ShowCursor(true);
  }
  else
  {
    dwexstyle=WS_EX_APPWINDOW|WS_EX_WINDOWEDGE;
    dwstyle=WS_OVERLAPPED;
  }
  PRECT windowrect=new RECT();
  windowrect->left =(long)0;
  windowrect->right=(long)width+0;
  windowrect->top =(long)0;
  windowrect->bottom=(long)height+0;
  AdjustWindowRectEx(windowrect,dwstyle,false,dwexstyle);
  int menuheight = 0,menuwidth=0;
  if (!fullscreenflag)
  {
    menuheight = 40;
    menuwidth = 20;
  }
  if (!(hwnd = CreateWindowEx(dwexstyle, L"My Window", title, WS_CLIPSIBLINGS | WS_CLIPCHILDREN | dwstyle, 0, 0, windowrect->right - windowrect->left+menuwidth, windowrect->bottom - windowrect->top + menuheight, 0, 0, hinstance, 0)))
  {
    KillWindow();
    MessageBox(0, L"Create w error", L"ERROR",MB_OK|MB_ICONEXCLAMATION);
    return false;
  }
  GLuint pixelformat;
  PPIXELFORMATDESCRIPTOR pfd=new PIXELFORMATDESCRIPTOR();
  pfd->nSize=sizeof(PPIXELFORMATDESCRIPTOR);
  pfd->nVersion =	1;
  pfd->dwFlags=PFD_DRAW_TO_WINDOW|PFD_SUPPORT_OPENGL|PFD_DOUBLEBUFFER;
  pfd->iPixelType=PFD_TYPE_RGBA;
  pfd->cColorBits=bits;
  pfd->cRedBits=0;
  pfd->cRedShift=0;
  pfd->cGreenBits=0;
  pfd->cGreenShift=0;
  pfd->cBlueBits=0;
  pfd->cBlueShift=0;
  pfd->cAlphaBits=0;
  pfd->cAlphaShift=0;
  pfd->cAccumBits=0;
  pfd->cAccumRedBits=0;
  pfd->cAccumGreenBits=0;
  pfd->cAccumBlueBits =0;
  pfd->cAccumAlphaBits=0;
  pfd->cDepthBits=32;
  pfd->cStencilBits=0;
  pfd->cAuxBuffers=0;
  pfd->iLayerType=PFD_MAIN_PLANE;
  pfd->bReserved=0;
  pfd->dwLayerMask=0;
  pfd->dwVisibleMask=0;
  pfd->dwDamageMask=0;
  if(!(hdc=GetDC(hwnd)))
  {
    KillWindow();
    MessageBox(0, L"can't create dc", L"ERROR",MB_OK|MB_ICONEXCLAMATION);
    return false;
  }
  if(!(pixelformat=ChoosePixelFormat(hdc,pfd)))
  {
    KillWindow();
    MessageBox(0, L"can't pixelf", L"ERROR",MB_OK|MB_ICONEXCLAMATION);
    return false;
  }
  if(!SetPixelFormat(hdc,pixelformat,pfd))
  {
    KillWindow();
    MessageBox(0, L"can't setpixel", L"ERROR",MB_OK|MB_ICONEXCLAMATION);
    return false;
  }
  if(!(hrc=wglCreateContext(hdc)))
  {
    KillWindow();
    MessageBox(0, L"can't context", L"ERROR",MB_OK|MB_ICONEXCLAMATION);
    return false;
  }
  if(!wglMakeCurrent(hdc,hrc))
  {
    KillWindow();
    MessageBox(0, L"can't context cur", L"ERROR",MB_OK|MB_ICONEXCLAMATION);
    return false;
  }
  ShowWindow(hwnd,SW_SHOW);
  SetForegroundWindow(hwnd);
  SetFocus(hwnd);
  return true;
}
GLvoid Keyboard::Show()
{
  SwapBuffers(hdc);
}
GLvoid Keyboard::Update()
{
  if(PeekMessage(msg_,0,0,0,PM_REMOVE)&&msg_->message!=WM_QUIT)
  {
    TranslateMessage(msg_);
    DispatchMessage(msg_);
  }
  return;
}
Keyboard::~Keyboard()
{
  //19.09.2017 21:22 no work in vs2010
  //delete msg_;
}
LRESULT CALLBACK Keyboard::WndProc(HWND hwnd,UINT umsg,WPARAM wparam,LPARAM lparam)
{
  switch(umsg)
  {
    msg_->message=umsg;
  case WM_LBUTTONDOWN:
    {
      x = LOWORD(lparam);
      y = HIWORD(lparam);
      lparam_=lparam;
      //if((x>x1)&&(x<x2)&&(y>y1)&&(y<y2))
      {
        //char* dst = new char[4];
        //MessageBox(hwnd,itoa(y,dst,10)/*"Поздравляю, с мышью вы разобрались!"*/, "Yes-s-s!", MB_OK|MB_ICONINFORMATION);
        //delete dst;
      }

    break;
    }
  case WM_RBUTTONDOWN:
    {
      x = LOWORD(lparam);
      y = HIWORD(lparam);
      lparam_=lparam;
      //if((x>x1)&&(x<x2)&&(y>y1)&&(y<y2))
      {
        //char *dst = new char[4];
        //MessageBox(hwnd, itoa(x,dst,10)/*"Поздравляю, с мышью вы разобрались!"*/, "Yes-s-s!", MB_OK|MB_ICONINFORMATION);
        //delete dst;
      }

    break;
    }
  case WM_ACTIVATE:
    {
      return 0;
    }
  case WM_SYSCOMMAND:
    {
      switch(wparam)
      {
      case SC_SCREENSAVE:
      case SC_MONITORPOWER:
        return 0;
      }
      break;
    }
  case WM_CLOSE:
    {
      PostQuitMessage(0);
      return 0;
    }
  case WM_KEYDOWN:
    {
      wparam_=wparam;
      return 0;
    }
  case WM_KEYUP:
    {
      wparam_=wparam;
      return 0;
    }
  case WM_SIZE:
    {
      lparam_=lparam;
      return 0;
    }
  }
  return DefWindowProc(hwnd,umsg,wparam,lparam);
}

One of many winapi function call errors, vs2010:
Error 80 error LNK2028: unresolved token (0A00002E) "extern "C" void __stdcall PostQuitMessage(int)" ([email protected]@[email protected]) referenced in function "public: static long __stdcall Keyboard::WndProc(struct HWND__ *,unsigned int,unsigned int,long)" ([email protected]@@[email protected]@[email protected])

Answer 1

I found the solution here www.cyberforum.ru/cpp-cli-winforms/thread1365908.html