系统相关.txt

vc使用技巧汇集

立即运行屏幕保护程序
::SendMessage(GetSafeHwnd(), WM_SYSCOMMAND, SC_SCREENSAVE, 0);
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//获得计算机的名字
char name[10];
DWORD size = sizeof(name);
GetComputerName(name,&size); 
-----------------------------------
//获得各种目录信息
Windows目录: Use "GetWindowsDirectory“
Windows下的system目录: Use "GetSystemDirectory"
temp目录: Use "GetTempPath "
当前目录: Use "GetCurrentDirectory"
请注意前两个函数的第一个参数为 目录变量名，后一个为缓冲区; 后两个相反.
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//怎样得到系统的分辨率
int icy, icx;
icx = GetSystemMetrics(SM_CXSCREEN);
icy = GetSystemMetrics(SM_CYSCREEN);
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//添加托盘
void CWorkSheetTrayDlg::AddTaskBarIcon()
{
	m_Nid.cbSize = sizeof(m_Nid);
	m_Nid.uFlags = NIF_MESSAGE | NIF_ICON | NIF_TIP;
	m_Nid.hIcon=(HICON)LoadImage(AfxGetInstanceHandle(),
			MAKEINTRESOURCE(IDI_SysIcon),IMAGE_ICON,16,16,NULL);

	//加载系统缺省图标
	strcpy(m_Nid.szTip,"潍坊检修申请管理系统");
	//提示字符
	m_Nid.uCallbackMessage=WM_USER + 10;
	m_Nid.uID = 10;
	m_Nid.hWnd=m_hWnd;
	Shell_NotifyIcon(NIM_ADD,&m_Nid);
}
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//删除托盘
void CWorkSheetTrayDlg::DeleteTaskBarIcon()
{
//	NOTIFYICONDATA m_Nid;
	m_Nid.cbSize=sizeof(m_Nid);
	m_Nid.uID=10;
	m_Nid.hWnd=m_hWnd;
	Shell_NotifyIcon(NIM_DELETE,&m_Nid);
}
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//设置光标
	SetCaretPos(m_pPoint);
//显示光标
	ShowCaret();
-------------------------------
//显示盘符
void CFileMakerView::FillDriveInfo()
{
	DWORD	dwDrives;
	char	a;
	CString DriveName;
        dwDrives = GetLogicalDrives();
        a = 'A';
        while (dwDrives > 0)
	{
	  if (dwDrives % 2 == 1)
	  {
	    DriveName.Format("%c", a);
	    GetTreeCtrl().InsertItem(DriveName,m_nImageClose, m_nImageOpen, TVI_ROOT, TVI_LAST);
	  }
        a++;
	dwDrives /= 2;
	}
}
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如何取得三个键盘提示灯当前状态？
用API 函数 GetKeyboardState，例如：
unsigned char kbuf[256];
GetKeyboardState(kbuf);

if(kbuf[VK_CAPITAL]&1)
GetDlgItem(ID_CAPS_LOCK_KEY)->SetWindowText("On");
else 
GetDlgItem(ID_CAPS_LOCK_KEY)->SetWindowText("Off");

if(kbuf[VK_NUMLOCK]&1)
GetDlgItem(ID_NUM_LOCK_KEY)->SetWindowText("On");
else 
GetDlgItem(ID_NUM_LOCK_KEY)->SetWindowText("Off");