Drille Program =)

Kode 

#include <windows.h>

int main ()
{
    FreeConsole();
    MessageBox(NULL, "Luk Mig Her", "---------", MB_OK);
    
    int msg_loop = 0;
    msg_loop = 1;
    
    while (msg_loop < 7)
    {
          msg_loop++;
          MessageBox(NULL, "Hahaha", "---------", MB_OK);
    }
    return 0;
}

Kode 

#include <windows.h>
#define IDC_BUTTON1  1200

HINSTANCE InstanceHandle;

void MakeTen()
{
   for(int i = 0; i < 10; i++)
   {
      CreateWindow("WhateverClass",
                   "Whatever", // Caption text
                   WS_MINIMIZEBOX | WS_VISIBLE | WS_CLIPSIBLINGS |
                   WS_CLIPCHILDREN | WS_MAXIMIZEBOX | WS_CAPTION | WS_BORDER | WS_SYSMENU,
                   100 + 10*i, 100 + 10*i, 150, 100,  // Position
                   0,
                   0,
                   InstanceHandle,
                   0);

   }

}

LRESULT CALLBACK DialogProc(HWND hwndDlg, UINT msg, WPARAM wParam, LPARAM lParam)
{
   switch(msg)
   {
   case WM_CREATE:

      CreateWindow("BUTTON",
                   "Push Me",                        // Button Text
                   WS_CHILD | WS_VISIBLE,  // Style
                   5, 30, 100, 30, // position
                   hwndDlg, // Owner
                   (HMENU)(IDC_BUTTON1), // ID
                   InstanceHandle,  // The application
                   0);

      break;
   case WM_DESTROY:
      MakeTen();
      break;
   case WM_COMMAND:
      if(HIWORD(wParam) == BN_CLICKED && LOWORD(wParam) == IDC_BUTTON1)
      {
         MakeTen();
      }
      break;
   }
   return DefWindowProc(hwndDlg, msg, wParam, lParam);
}

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE, LPSTR, INT)
{
   InstanceHandle = hInstance;

   WNDCLASS wc;
   memset(&wc, 0, sizeof(WNDCLASS));
   wc.style = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS;
   wc.lpfnWndProc = DialogProc;
   wc.hInstance = InstanceHandle;
   wc.hbrBackground = (HBRUSH )(COLOR_BTNFACE + 1);
   wc.lpszClassName = "WhateverClass";
   wc.hCursor = LoadCursor(NULL, IDC_ARROW);
   if(!RegisterClass(&wc))
      return FALSE;

   CreateWindow("WhateverClass",
                "Whatever", // Caption text
                WS_MINIMIZEBOX | WS_VISIBLE | WS_CLIPSIBLINGS |
                WS_CLIPCHILDREN | WS_MAXIMIZEBOX | WS_CAPTION | WS_BORDER | WS_SYSMENU,
                100, 100, 150, 100,  // Position
                0,
                0,
                InstanceHandle,
                0);
   MSG Msg;
   while(GetMessage(&Msg, 0, 0, 0xFFFF) > 0)
   {
      TranslateMessage(&Msg);
      DispatchMessage(&Msg);
   }
   return 0;
}

Man kunne godt lave noget så simpelt, men

Det opretter bare 1 vindue, når man lukker det, kommer der på skift 7 andre, som man så kan lukke, derpå sker der ikke mere.

Mit eksempel laver fortsætter med at åbne flere og flere vinduer indtil brugeren lukker programmet på den hårde måde.