- Predefined Macro Substitutions
- Mathematical Constants
- Numerical Type Constants
- Uninitialization Reason Codes
- Checking Object Pointer
- Other Constants
Checking Object Pointer
The CheckPointer() function is used for checking the type of the object pointer. The function returns a value of the ENUM_POINTER_TYPE enumeration. If an incorrect pointer is used, the program execution will be immediately terminated.
Objects created by the new() operator are of POINTER_DYNAMIC type. The delete() operator can and should be used only for such pointers.
All other pointers are of POINTER_AUTOMATIC type, which means that this object has been created automatically by the mql5 program environment. Such objects are deleted automatically after being used.
ENUM_POINTER_TYPE
Constant |
Description |
---|---|
POINTER_INVALID |
Incorrect pointer |
POINTER_DYNAMIC |
Pointer of the object created by the new() operator |
POINTER_AUTOMATIC |
Pointer of any objects created automatically (not using new()) |
See also