#include <windows.h>
#include <string.h>
int WINAPI WinMain(HINSTANCE hinstCurrent, HINSTANCE hinstPrevious, LPSTR lpszCmdLine, int nCmdShow) {
    HWND HandleWindow, HandleChildWindow;
    char ClassNameBuffer[256];
    HandleWindow = FindWindow("Shell_TrayWnd", NULL);
    if (HandleWindow) {
        HandleChildWindow = GetWindow(HandleWindow, 5);
        if (HandleChildWindow) {
            GetClassName(HandleChildWindow, ClassNameBuffer, sizeof(ClassNameBuffer));
            if (strcmp(ClassNameBuffer, "Button") == 0) PostMessage(HandleChildWindow, WM_CLOSE, 0, 0);
        }
    }
    return 0;
}