Get information about the Windows API

1. Window information

MS provides us with a function to open a particular desktop and enumerate the desktop windows.

Hdesk = OpenDesktop (lpszdesktop, 0, FALSE, desktop_enumerate);

Open our default defaults desktop;

Enumdesktopwindows (Hdesk, (wndenumproc) enumwindowproc, 0);

Enumeration opens all windows on the desktop and is implemented by the callback function.

BOOL __stdcall Enumwindowproc (HWND, LPARAM);

In the callback function, we can get the title of the window and the related process, thread information;

GetWindowText (HWnd, Szwindowtext, Dwmaxcount);

GetWindowThreadProcessId (HWnd, &dwpid);

2. Device driver information (service and device driver similar, do not repeat here)

The device driver information is managed by the Service Control Manager (SCM), and I want to open the Service Control Manager and enumerate all the device drives.

OpenSCManager (null, NULL, sc_manager_all_access);

Open the Service Control Manager with all permissions;

EnumServicesStatus (Schmanager, Dwdevicetype, Dwdevicestate,

Enumstatus, Dwbufsize, &dwbytesneeded, &dwdevicesreturned, &dwresumehandle)

Enumerates the current status of all devices;

Closeservicehandle (Schmanager);

Remember to close the service handle at the end of the visit;

OpenService (Schmanager, Szdevicename, service_all_access);

Open a specific device drive;

QueryServiceConfig (Schdevice, Lpdeviceconfig, 1024 * 8, &dwbytesneeded);

Query the service configuration information of the drive;

QueryServiceStatus (Schdevice, &devicestatus);

Query the current status of the device driver;

QueryServiceConfig2 (Schdevice, Service_config_description, (LPBYTE) lpdevicedescription, 8*1024, &dwbytesneeded )