SetTimer函数....

#include <stdio.h>
#include <stdlib.h>
#include <windows.h>
const int IDT_TIMER1 = 0;
void CALLBACK TimeProc(HWND hwnd, UINT uMsg, UINT_PTR idEvent, DWORD dwTime)
{
    printf(".");
}
int main(int argc, char *argv[])
{
    HANDLE hwnd;
    HANDLE hDev;
    char buf[512] = {'/0'};
    DWORD num;
    int i = 0;
    system("title Test");
    hwnd = FindWindowA(NULL,"Test");
    if (hwnd == INVALID_HANDLE_VALUE)
    {
        fprintf(stderr, "Not found/n");
        exit(1);
    }
    num = SetTimer(NULL, IDT_TIMER1, 1000, TimeProc);
    printf("handle=%#x --------------->>>> Timer ok? %#x Err:%d/n", hwnd, num, GetLastError());
    printf("--------------------------------------------------------------------"
           "-----------/n", hwnd, num, GetLastError());

    hDev = CreateFileA(".//PHYSICALDRIVE0", GENERIC_READ, FILE_SHARE_READ,
                        0,
                        OPEN_EXISTING,
                        0,
                        0);
    if (hDev == INVALID_HANDLE_VALUE)
    {
        fprintf(stderr, ".//PHYSICALDRIVE0 Open Error/n");
        exit(1);
    }
    ReadFile(hDev, buf, 512, &num, NULL);
    CloseHandle(hDev);
    for (i=0; i<512; i++)
    {
        printf("%02X%c", buf[i]&0xFF, (i+1)%26?' ':'/n');
    }
    printf("/nNum: %d bytes", num);
    MSG msg;
    while (GetMessage(&msg, NULL, 0, 0))
    {
        if (!TranslateAccelerator(msg.hwnd, NULL, &msg))
        {
            TranslateMessage(&msg);
            DispatchMessage(&msg);
        }
    }
    return 0;
}