PassGen source

#include <Windows.h>
#include <stdlib.h>
LRESULT CALLBACK WndProc(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam);
BOOL CALLBACK EnumChildProc(HWND hWnd, LPARAM lParam);
TCHAR szClassName[] = TEXT("PassGenWnd");
int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nShowCmd)
{
    HWND hWnd, hButton, hEdit, hStatic, hAbout;
    MSG Msg;
    WNDCLASSEX wcex;

    wcex.cbClsExtra = 0;
    wcex.cbSize = sizeof(WNDCLASSEX);
    wcex.cbWndExtra = 0;
    wcex.hbrBackground = (HBRUSH) COLOR_WINDOW;
    wcex.hCursor = LoadCursor(NULL, IDC_ARROW);
    wcex.hIcon = LoadIcon(NULL, IDI_APPLICATION);
    wcex.hIconSm = LoadIcon(NULL, IDI_APPLICATION);
    wcex.hInstance = hInstance;
    wcex.lpfnWndProc = WndProc;
    wcex.lpszClassName = szClassName;
    wcex.lpszMenuName = NULL;
    wcex.style = CS_HREDRAW | CS_VREDRAW;

    RegisterClassEx(&wcex);

    hWnd = CreateWindowEx(WS_EX_OVERLAPPEDWINDOW, szClassName, TEXT("Secure Password Generator"), WS_VISIBLE | WS_SYSMENU, 100, 100, 300, 100, NULL, NULL, hInstance, NULL);
    hButton = CreateWindowEx(0, TEXT("BUTTON"), TEXT("Generate"), WS_VISIBLE | WS_CHILD, 190, 38, 100, 30, hWnd, NULL, hInstance, NULL);
    hStatic = CreateWindowEx(0, TEXT("STATIC"), TEXT("If you decide to use one of these passwords, do not forget it!"), WS_VISIBLE | WS_CHILD, 0, 0, 290, 20, hWnd, NULL, hInstance, NULL);
    hEdit = CreateWindowEx(WS_EX_CLIENTEDGE, TEXT("EDIT"), TEXT(""), WS_VISIBLE | WS_CHILD | ES_READONLY, 0, 20, 290, 20, hWnd, NULL, hInstance, NULL);
    hAbout = CreateWindowEx(0, TEXT("STATIC"), TEXT("Made by Govind on Sythe.org"), WS_VISIBLE | WS_CHILD, 0, 40, 160, 20, hWnd, NULL, hInstance, NULL);
    ShowWindow(hWnd, SW_SHOW);
    EnumChildWindows(hWnd, EnumChildProc, MAKELPARAM(FALSE, 0));
    UpdateWindow(hWnd);

    while(GetMessage(&Msg, NULL, 0, 0) > 0)
    {
        TranslateMessage(&Msg);
        DispatchMessage(&Msg);
    }
    return Msg.wParam;

}



BOOL CALLBACK EnumChildProc(HWND hWnd, LPARAM lParam)
{
    HFONT hfDefault = (HFONT) GetStockObject(DEFAULT_GUI_FONT);
    SendMessage(hWnd, WM_SETFONT, (WPARAM) hfDefault, MAKELPARAM(FALSE, 0));
    return TRUE;
}

LRESULT CALLBACK WndProc(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam)
{
    PAINTSTRUCT ps;
    switch(Msg)
    {
    case WM_CLOSE:
        DestroyWindow(hWnd);
        break;
    case WM_COMMAND:
        srand((unsigned)GetTickCount());
        if((HWND)lParam==FindWindowEx(hWnd, 0, TEXT("BUTTON"), 0))
        {
            TCHAR szTable[] = TEXT("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890,.`~!@#$%^&*()_+=-;:[{]}\\|/\?<>\'\"");
            int len = wcslen(szTable);
            int pwlen = 12+rand()%6;
            int i;
            TCHAR newPass[19];
            HWND hEdit = FindWindowEx(hWnd, 0, TEXT("EDIT"), 0);
            for(i = 0; i < pwlen; i++)
            {
                newPass[i] = szTable[rand()%len];
            }
            newPass[i] = 0;
            SetWindowText(hEdit, newPass);
        }
        break;
    case WM_DESTROY:
        PostQuitMessage(0);
        break;
    case WM_PAINT:
        BeginPaint(hWnd, &ps);
        EnumChildWindows(hWnd, EnumChildProc, MAKELPARAM(FALSE, 0));
        EndPaint(hWnd, &ps);
        break;
    default:
        return DefWindowProc(hWnd, Msg, wParam, lParam);
    }
    return 0;
}