This code snippet is originally from the former WinAPI site www.winapi.net

If you want to know, if the user inserted a medium like a disk or a CD into the drive, use this code:

#include <windows.h>
#include <shlwapi.h>
 
// uDrive:
// 0 - A:\
// 1 - B:\
// 2 - C:\
// etc.
 
BOOL IsDriveReady(UINT uDrive)
{
    TCHAR szRootPathName[32];
    UINT uErrorMode;
    BOOL bRet;
 
    PathBuildRoot(szRootPathName, uDrive);
 
    uErrorMode = SetErrorMode(SEM_FAILCRITICALERRORS);
    bRet = GetVolumeInformation(szRootPathName, NULL, 0, NULL, NULL, NULL, NULL, 0);
    SetErrorMode(uErrorMode);
 
    return(bRet);
}