File:
CreateFileA / CreateFileW
ReadFile
ReadFileEx
WriteFile
WriteFileEx
SetFilePointer
SetFilePointerEx
GetSystemDirectoryA / GetSystemDirectoryW
GetFileAttributesA / GetFileAttributesW
GetFileAttributesExA / GetFileAttributesExW
GetFileSize
GetFileSizeEx
GetDriveTypeA / GetDriveTypeW
GetLastError

INI-File:
GetPrivateProfileStringA / GetPrivateProfileStringW
GetPrivateProfileIntA / GetPrivateProfileIntW
GetPrivateProfileSectionA / GetPrivateProfileSectionW
GetPrivateProfileStructA / GetPrivateProfileStructW
WritePrivateProfileStringA / WritePrivateProfileStringW
WritePrivateProfileSectionA / WritePrivateProfileSectionW
WritePrivateProfileStructA / WritePrivateProfileStructW

Registry:
RegCreateKeyA / RegCreateKeyW
RegCreateKeyExA / RegCreateKeyExW
RegDeleteKeyA / RegDeleteKeyW
RegQueryValue / RegQueryValueEx
RegEnumKeyA / RegEnumKeyW
RegEnumKeyExA / RegEnumKeyExW
RegEnumValueA / RegEnumValueW
RegSetValueA / RegSetValueW
RegSetValueExA / RegSetValueExW
RegOpenKeyA /RegOpenKeyW
RegOpenKeyExA /RegOpenKeyExW
RegCloseKey

Directory:
CreateDirectoryA / CreateDirectoryW
CreateDirectoryExA / CreateDirectoryExW 
GetCurrentDirectoryA / GetCurrentDirectoryW
GetSystemDirectoryA / GetSystemDirectoryW
GetWindowsDirectoryA / GetWindowsDirectoryW
RemoveDirectoryA / RemoveDirectoryW

Message boxes:
MessageBoxA / MessageBoxW
MessageBoxExA / MessageBoxExW
MessageBoxIndirectA / MessageBoxIndirectW
MessageBoxTimeoutA / MessageBoxTimeoutW
SoftModalMessageBox
MessageBeep

Dialog boxes:
CreateWindowExA / CreateWindowExW
CreateDialogIndirectParamA / CreateDialogIndirectParamW
CreateDialogParamA / CreateDialogParamW
DialogBoxIndirectParamA / DialogBoxIndirectParamW
DialogBoxParamA / DialogBoxParamW
ShowWindow
EndDialog

Edit boxes:
GetWindowTextA / GetWindowTextW
GetDlgItemTextA / GetDlgItemTextW
GetDlgItemInt
SetWindowTextA / SetWindowTextW
SetDlgItemTextA / SetDlgItemTextW
SetDlgItemInt

Time:
GetLocalTime
GetFileTime
GetSystemTime
GetTickCount
FileTimeToSystemTime
SystemTimetoFileTime
CompareFileTime

CDROM:
GetDriveTypeA / GetDriveTypeW
GetLogicalDrives
GetLogicalDriveStringsA / GetLogicalDriveStringsW