# SPTYPES.BAS

This module contains type definitions used for Windows API calls in the Desaware API Class library.

## Type Definitions

### RECT
Structure that defines a rectangle by its coordinates.

#### Win32 Version
- `left` (Long) - X coordinate of upper-left corner
- `top` (Long) - Y coordinate of upper-left corner  
- `right` (Long) - X coordinate of lower-right corner
- `bottom` (Long) - Y coordinate of lower-right corner

#### 16-bit Version  
- `left` (Integer) - X coordinate of upper-left corner
- `top` (Integer) - Y coordinate of upper-left corner
- `right` (Integer) - X coordinate of lower-right corner  
- `bottom` (Integer) - Y coordinate of lower-right corner

### Win32-Only Types

#### ACL (Access Control List)
Structure that defines security permissions:
- `AclRevision` (Byte) - Revision level of the ACL
- `Sbz1` (Byte) - Reserved
- `AclSize` (Integer) - Size of ACL structure
- `AceCount` (Integer) - Count of ACE entries
- `Sbz2` (Integer) - Reserved

#### SECURITY_DESCRIPTOR  
Structure that defines security attributes:
- `Revision` (Byte) - Revision level
- `Sbz1` (Byte) - Reserved
- `Control` (Long) - Control flags
- `Owner` (Long) - Pointer to owner SID
- `Group` (Long) - Pointer to group SID
- `Sacl` (ACL) - System Access Control List
- `Dacl` (ACL) - Discretionary Access Control List