C / C++ / MFC

#define UNICODE<br />
#include <windows.h><br />
#include <gdiplus.h><br />
using namespace Gdiplus;<br />
<br />
VOID OnPaint(HDC hdc)<br />
{<br />
   Graphics graphics(hdc);<br />
   Pen      pen(Color(255, 0, 0, 255));<br />
   graphics.DrawLine(&pen, 0, 0, 200, 100);<br />
}<br />
<br />
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);<br />
<br />
INT WINAPI WinMain(HINSTANCE hInstance, HINSTANCE, PSTR, INT iCmdShow)<br />
{<br />
   HWND                hWnd;<br />
   MSG                 msg;<br />
   WNDCLASS            wndClass;<br />
   GdiplusStartupInput gdiplusStartupInput;<br />
   ULONG_PTR           gdiplusToken;<br />
   <br />
   // Initialize GDI+.<br />
   GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, NULL);<br />
   <br />
   wndClass.style          = CS_HREDRAW | CS_VREDRAW;<br />
   wndClass.lpfnWndProc    = WndProc;<br />
   wndClass.cbClsExtra     = 0;<br />
   wndClass.cbWndExtra     = 0;<br />
   wndClass.hInstance      = hInstance;<br />
   wndClass.hIcon          = LoadIcon(NULL, IDI_APPLICATION);<br />
   wndClass.hCursor        = LoadCursor(NULL, IDC_ARROW);<br />
   wndClass.hbrBackground  = (HBRUSH)GetStockObject(WHITE_BRUSH);<br />
   wndClass.lpszMenuName   = NULL;<br />
   wndClass.lpszClassName  = TEXT("GettingStarted");<br />
   <br />
   RegisterClass(&wndClass);<br />
   <br />
   hWnd = CreateWindow(<br />
      TEXT("GettingStarted"),   // window class name<br />
      TEXT("Getting Started"),  // window caption<br />
      WS_OVERLAPPEDWINDOW,      // window style<br />
      CW_USEDEFAULT,            // initial x position<br />
      CW_USEDEFAULT,            // initial y position<br />
      CW_USEDEFAULT,            // initial x size<br />
      CW_USEDEFAULT,            // initial y size<br />
      NULL,                     // parent window handle<br />
      NULL,                     // window menu handle<br />
      hInstance,                // program instance handle<br />
      NULL);                    // creation parameters<br />
	  <br />
   ShowWindow(hWnd, iCmdShow);<br />
   UpdateWindow(hWnd);<br />
   <br />
   while(GetMessage(&msg, NULL, 0, 0))<br />
   {<br />
      TranslateMessage(&msg);<br />
      DispatchMessage(&msg);<br />
   }<br />
   <br />
   GdiplusShutdown(gdiplusToken);<br />
   return msg.wParam;<br />
}  // WinMain<br />
<br />
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, <br />
   WPARAM wParam, LPARAM lParam)<br />
{<br />
   HDC          hdc;<br />
   PAINTSTRUCT  ps;<br />
   <br />
   switch(message)<br />
   {<br />
   case WM_PAINT:<br />
      hdc = BeginPaint(hWnd, &ps);<br />
      OnPaint(hdc);<br />
      EndPaint(hWnd, &ps);<br />
      return 0;<br />
   case WM_DESTROY:<br />
      PostQuitMessage(0);<br />
      return 0;<br />
   default:<br />
      return DefWindowProc(hWnd, message, wParam, lParam);<br />
   }<br />
} // WndProc

AryaSoft wrote:

1. How do you ensure data consistency with mulitple threads.

AryaSoft wrote:

2. How do you implement a single linked with multiple threads accessing and updating the same. What are the different ways to do it. What is best for performance?

AryaSoft wrote:

3. Write code for inserting into singly linked list, taking into consideration that multiple threads can call the same function concurrently.

AryaSoft wrote:

. Networking questions. Difference between TCP, UDP and why should one use UDP.

AryaSoft wrote:

3. What is multicast.

AryaSoft wrote:

4. How does data send and receive work in UDP. How much data can application send at one shot with UDP and how does it work with TCP?

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