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C-/C++-Quelltext

#include <windows.h>

LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);

int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, 
    PWSTR pCmdLine, int nCmdShow)
{
  MSG  msg;    
  HWND hwnd;
  WNDCLASSW wc;
    
  wc.style         = CS_HREDRAW | CS_VREDRAW;
  wc.cbClsExtra    = 0;
  wc.cbWndExtra    = 0;
  wc.lpszClassName = L"Window";
  wc.hInstance     = hInstance;
  wc.hbrBackground = GetSysColorBrush(COLOR_3DFACE);
  wc.lpszMenuName  = NULL;
  wc.lpfnWndProc   = WndProc;
  wc.hCursor       = LoadCursor(NULL, IDC_ARROW);
  wc.hIcon         = LoadIcon(NULL, IDI_APPLICATION);
  
  RegisterClassW(&wc);
  hwnd = CreateWindowW( wc.lpszClassName, L"Window",
                WS_OVERLAPPEDWINDOW | WS_VISIBLE,
                100, 100, 350, 250, NULL, NULL, hInstance, NULL);  

  ShowWindow(hwnd, nCmdShow);
  UpdateWindow(hwnd);

  while( GetMessage(&msg, NULL, 0, 0)) {
    DispatchMessage(&msg);
  }

  return (int) msg.wParam;
}

LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, 
    WPARAM wParam, LPARAM lParam)
{
  switch(msg)  
  {
    case WM_DESTROY:
      PostQuitMessage(0);
      return 0;
    case WM_LBUTTONUP:
    case WM_RBUTTONUP:
    case WM_MBUTTONUP:
    case WM_XBUTTONUP:
         notifyButtonReleased(wParam, lParam); // wParam ist immer 0 egal bei welcher Taste
    break;
    case WM_LBUTTONDOWN:
    case WM_RBUTTONDOWN:
    case WM_MBUTTONDOWN:
    case WM_XBUTTONDOWN:
            notifyButtonPressed(wParam, lParam); // Arbeitet Korrect wParam hat die Richtige Taste
    break;

  return DefWindowProcW(hwnd, msg, wParam, lParam);
}