dev c++实现windows shutdown图形化界面（源代码如下）

#include<windows.h>

#include<stdio.h>

char str[];

char cmd[];

//char hour[10], minute[10];

int num;

int num_text_hour, num_text_minute;

//char num_str[];

LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM);

int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance, LPSTR lpCmdLine,int nCmdShow)

{

HWND hWnd;

MSG Msg;

WNDCLASS WndClass;

WndClass.style=CS_HREDRAW|CS_VREDRAW;

WndClass.lpfnWndProc=WndProc;

WndClass.cbClsExtra=0;

WndClass.cbWndExtra=0;

WndClass.hInstance=hInstance;

WndClass.hIcon=LoadIcon(NULL,IDI_APPLICATION);

WndClass.hCursor=LoadCursor(NULL,IDC_ARROW);

WndClass.hbrBackground=(HBRUSH)GetStockObject(WHITE_BRUSH);

WndClass.lpszMenuName=NULL;

WndClass.lpszClassName="Hello Win"; //窗口类名

//注册窗口

if(!RegisterClass(&WndClass))

{

MessageBox(NULL,"窗口注册失败!","Hello Win",0);

return 0;

}

//创建窗口

hWnd=CreateWindow("Hello Win", "定时关机--junmuzi", WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hInstance, NULL);

//显示窗口

ShowWindow(hWnd,nCmdShow);

//更新窗口

UpdateWindow(hWnd);

//进入消息循环：当从应用程序消息队列中捡取的消息是WM_QUIT时，则推出循环

while(GetMessage(&Msg,NULL,0,0))

{

TranslateMessage(&Msg); //转换键盘消息

DispatchMessage(&Msg); //分发消息

}

return Msg.wParam;

}

LRESULT CALLBACK WndProc(HWND hWnd,UINT message,WPARAM wParam,LPARAM lParam)

{

HDC hDC;

PAINTSTRUCT Ps;

char strEdit_hour[10], strEdit_minute[10];

static HWND hWndButton_ok, hWndButton_cancel, hWndEdit_hour, hWndEdit_minute;

switch(message)

{

case WM_CREATE:

hWndEdit_hour = CreateWindow("edit",NULL,WS_CHILD|WS_VISIBLE|WS_BORDER,10,60,100,25,hWnd,NULL,NULL,NULL);

hWndEdit_minute = CreateWindow("edit",NULL,WS_CHILD|WS_VISIBLE|WS_BORDER,180,60,100,25,hWnd,NULL,NULL,NULL);

hWndButton_ok = CreateWindow("button","确定",WS_CHILD|WS_VISIBLE|WS_BORDER, 340, 60, 100, 25, hWnd,NULL,NULL,NULL);

hWndButton_cancel = CreateWindow("button","取消定时关机",WS_CHILD|WS_VISIBLE|WS_BORDER, 460, 60, 100, 25, hWnd,NULL,NULL,NULL);

return 0;

case WM_COMMAND:

if(((HWND)lParam==hWndButton_ok)&&(HIWORD(wParam)==BN_CLICKED))

//按下按键hWndButton_ok

{

num_text_hour = GetWindowText(hWndEdit_hour,strEdit_hour,10); //获取编辑框控件hour的内容

//sprintf(str,"The result is: %s",strEdit_hour);

//sprintf(hour, "%s", strEdit_hour);

if (num_text_hour == 0)

{

MessageBox(NULL,"小时不能为空!","错误信息：", MB_OK);

}

num_text_minute = GetWindowText(hWndEdit_minute,strEdit_minute,10); //获取编辑框控件minute的内容

if (num_text_minute == 0)

{

MessageBox(NULL,"分钟不能为空!","错误信息：", MB_OK);

}

if (!((atoi(strEdit_hour) >= 0) && (atoi(strEdit_minute) >= 0) && (atoi(strEdit_minute) <= 60)))

{

MessageBox(NULL,"非法输入（输入的小时必须大于等于0，输入的分钟必须大于等于0,且小于等于60）","错误信息：", MB_OK);

}

if ((num_text_hour != 0) && (num_text_minute != 0) && (atoi(strEdit_hour) >= 0) && (atoi(strEdit_minute) >= 0) && (atoi(strEdit_minute) <= 60))

{

num = atoi(strEdit_hour) * 3600 + atoi(strEdit_minute) * 60; //把小时和分钟数转化为多少秒

//itoa(num, num_str, 10);

//sprintf(str,"The result is: %s",strEdit_minute);

//sprintf(minute, "%s", strEdit_minute);

//strcat(cmd, str_);

//sprintf(cmd, "shutdown -s -t %s %s %d", strEdit_hour, strEdit_minute, num);

sprintf(cmd, "shutdown -s -t %d", num); // 定时关机命令

sprintf(str, "电脑会在%s小时%s分钟后关机！！！", strEdit_hour, strEdit_minute);

system(cmd); //shutdown the computer.

InvalidateRect(hWnd,NULL,TRUE);

}

}

if(((HWND)lParam == hWndButton_cancel)&&(HIWORD(wParam) == BN_CLICKED))

//按下按键hWndButton_cancel

{

sprintf(cmd, "shutdown -a"); //取消定时关机

sprintf(str, "电脑定时关机被取消！！！");

system(cmd); //cancel ”shutdown the computer“.

InvalidateRect(hWnd,NULL,TRUE);

}

case WM_PAINT://设计编辑框

hDC=BeginPaint(hWnd,&Ps);

TextOut(hDC,10,10,"请输入你要设置的多长时间后关机（小时和分钟数）：",48);

TextOut(hDC,120,60,"小时",4);

TextOut(hDC,290,60,"分钟",4);

//TextOut(hDC,10,90,str,strlen(str));

TextOut(hDC,10,90,str,strlen(str));

EndPaint(hWnd,&Ps);

return 0;

case WM_DESTROY:

PostQuitMessage(0);

return 0;

}

return DefWindowProc(hWnd,message,wParam,lParam);

}