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#include <Windows.h>
int ScreenWidth, ScreenHeight;
int Interval = 100;
LRESULT CALLBACK Melter(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam)
{
switch (Msg)
{
case WM_CREATE:
{
HDC Desktop = GetDC(HWND_DESKTOP);
HDC Window = GetDC(hWnd);
BitBlt(Window, 0, 0, ScreenWidth, ScreenHeight, Desktop, 0, 0, SRCCOPY);
ReleaseDC(hWnd, Window);
ReleaseDC(HWND_DESKTOP, Desktop);
SetTimer(hWnd, 0, Interval, 0);
ShowWindow(hWnd, SW_SHOW);
break;
}
case WM_PAINT:
{
ValidateRect(hWnd, 0);
break;
}
case WM_TIMER:
{
HDC Window = GetDC(hWnd);
int X = (rand() % ScreenWidth) - (150 / 2),
Y = (rand() % 15),
Width = (rand() % 150);
BitBlt(Window, X, Y, Width, ScreenHeight, Window, X, 0, SRCCOPY);
ReleaseDC(hWnd, Window);
break;
}
case WM_DESTROY:
{
KillTimer(hWnd, 0);
PostQuitMessage(0);
break;
}
return 0;
}
return DefWindowProc(hWnd, Msg, wParam, lParam);
}
int APIENTRY WinMain(HINSTANCE Inst, HINSTANCE Prev, LPSTR Cmd, int showcmd)
{
// Get the width & height of current display
ScreenWidth = GetSystemMetrics(SM_CXSCREEN);
ScreenHeight = GetSystemMetrics(SM_CYSCREEN);
WNDCLASS wndClass = { 0, Melter, 0,0, Inst, 0, LoadCursorW(0, IDC_ARROW), 0, 0, L"ScreenMelter" };
if (RegisterClass(&wndClass))
{
// Create the "melter" overlapping window.
HWND hWnd = CreateWindowExA(WS_EX_TOPMOST, "ScreenMelter", 0, WS_POPUP,
0, 0, ScreenWidth, ScreenHeight, HWND_DESKTOP, 0, Inst, 0);
if (hWnd)
{
// seed for randomization
srand(GetTickCount());
MSG Msg = { 0 };
// Run the melter loop
while (Msg.message != WM_QUIT)
{
if (PeekMessage(&Msg, 0, 0, 0, PM_REMOVE))
{
TranslateMessage(&Msg);
DispatchMessage(&Msg);
}
}
}
}
return 0;
}
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