The <QtTypes> header file includes Qt fundamental type declarations. More...
| Header: | #include <QtTypes> |
| qint8 | |
| qint16 | |
| qint32 | |
| qint64 | |
(since 6.6) |
qint128 |
| qintptr | |
| qlonglong | |
| qptrdiff | |
| qreal | |
| qsizetype | |
| quint8 | |
| quint16 | |
| quint32 | |
| quint64 | |
(since 6.6) |
quint128 |
| quintptr | |
| qulonglong | |
| uchar | |
| uint | |
| ulong | |
| ushort |
(since 6.2) |
|
(since 6.2) |
|
(since 6.2) |
|
(since 6.2) |
|
(since 6.2) |
PRIXQUINTPTR |
(since 6.2) |
PRIdQINTPTR |
(since 6.2) |
PRIdQPTRDIFF |
(since 6.2) |
PRIdQSIZETYPE |
(since 6.2) |
PRIiQINTPTR |
(since 6.2) |
PRIiQPTRDIFF |
(since 6.2) |
PRIiQSIZETYPE |
(since 6.2) |
PRIoQUINTPTR |
(since 6.2) |
PRIuQUINTPTR |
(since 6.2) |
PRIxQUINTPTR |
(since 6.6) |
QT_SUPPORTS_INT128 |
(since 6.6) qint128 |
Q_INT128_C(literal) |
(since 6.6) |
Q_INT128_MAX |
(since 6.6) |
Q_INT128_MIN |
| qint64 | Q_INT64_C(literal) |
(since 6.6) quint128 |
Q_UINT128_C(literal) |
(since 6.6) |
Q_UINT128_MAX |
| quint64 | Q_UINT64_C(literal) |
The header file declares several type definitions that guarantee a specified bit-size on all platforms supported by Qt for various basic types, for example qint8 which is a signed
char guaranteed to be 8-bit on all platforms supported by Qt. The header file also declares the qlonglong type definition for long long int.
Several convenience type definitions are declared: qreal for double or float, uchar for unsigned char, uint for unsigned int, ulong for unsigned long and ushort for unsigned short.
The header also provides series of macros that make it possible to print some Qt type aliases (qsizetype, qintptr, etc.) via a formatted output facility such as printf() or qDebug() without raising formatting warnings and without the need of a type cast.
Typedef for signed char. This type is guaranteed to be 8-bit on all platforms supported by Qt.
Typedef for signed short. This type is guaranteed to be 16-bit on all platforms supported by Qt.
Typedef for signed int. This type is guaranteed to be 32-bit on all platforms supported by Qt.
Typedef for long long int. This type is guaranteed to be 64-bit on all platforms supported by Qt.
Literals of this type can be created using the Q_INT64_C() macro:
qint64 value = Q_INT64_C(932838457459459);
See also Q_INT64_C(), quint64, and qlonglong.
[since 6.6] qint128Typedef for __int128 on platforms that support it (Qt defines the macro QT_SUPPORTS_INT128 if this is the case).
Literals of this type can be created using the Q_INT128_C() macro.
This typedef was introduced in Qt 6.6.
See also Q_INT128_C(), Q_INT128_MIN, Q_INT128_MAX, quint128, and QT_SUPPORTS_INT128.
Integral type for representing pointers in a signed integer (useful for hashing, etc.).
Typedef for either qint32 or qint64. This type is guaranteed to be the same size as a pointer on all platforms supported by Qt. On a system with 32-bit pointers, qintptr is a typedef for qint32; on a system with 64-bit pointers, qintptr is a typedef for qint64.
Note that qintptr is signed. Use quintptr for unsigned values.
In order to print values of this type by using formatted-output facilities such as printf(), qDebug(), QString::asprintf() and so on, you can use the PRIdQINTPTR and PRIiQINTPTR macros as format specifiers. They will both print the value as a
base 10 number.
qintptr p = 123; printf("The pointer is %" PRIdQINTPTR "\n", p);
See also qptrdiff, qint32, and qint64.
Typedef for long long int (__int64 on Windows). This is the same as qint64.
See also qulonglong and qint64.
Integral type for representing pointer differences.
Typedef for either qint32 or qint64. This type is guaranteed to be the same size as a pointer on all platforms supported by Qt. On a system with 32-bit pointers, quintptr is a typedef for quint32; on a system with 64-bit pointers, quintptr is a typedef for quint64.
Note that qptrdiff is signed. Use quintptr for unsigned values.
In order to print values of this type by using formatted-output facilities such as printf(), qDebug(), QString::asprintf() and so on, you can use the PRIdQPTRDIFF and PRIiQPTRDIFF macros as format specifiers. They will both print the value as
a base 10 number.
qptrdiff d = 123; printf("The difference is %" PRIdQPTRDIFF "\n", d);
See also quintptr, qint32, and qint64.
Typedef for double unless Qt is configured with the -qreal float option.
[alias] qsizetypeIntegral type providing Posix' ssize_t for all platforms.
This type is guaranteed to be the same size as a size_t on all platforms supported by Qt.
Note that qsizetype is signed. Use size_t for unsigned values.
In order to print values of this type by using formatted-output facilities such as printf(), qDebug(), QString::asprintf() and so on, you can use the PRIdQSIZETYPE and PRIiQSIZETYPE macros as format specifiers. They will both print the value
as a base 10 number.
qsizetype s = 123; printf("The size is %" PRIdQSIZETYPE "\n", s);
See also qptrdiff.
Typedef for unsigned char. This type is guaranteed to be 8-bit on all platforms supported by Qt.
Typedef for unsigned short. This type is guaranteed to be 16-bit on all platforms supported by Qt.
Typedef for unsigned int. This type is guaranteed to be 32-bit on all platforms supported by Qt.
Typedef for unsigned long long int. This type is guaranteed to be 64-bit on all platforms supported by Qt.
Literals of this type can be created using the Q_UINT64_C() macro:
quint64 value = Q_UINT64_C(932838457459459);
See also Q_UINT64_C(), qint64, and qulonglong.
[since 6.6] quint128Typedef for unsigned __int128 on platforms that support it (Qt defines the macro QT_SUPPORTS_INT128 if this is the case).
Literals of this type can be created using the Q_UINT128_C() macro.
This typedef was introduced in Qt 6.6.
See also Q_UINT128_C(), Q_UINT128_MAX, qint128, and QT_SUPPORTS_INT128.
Integral type for representing pointers in an unsigned integer (useful for hashing, etc.).
Typedef for either quint32 or quint64. This type is guaranteed to be the same size as a pointer on all platforms supported by Qt. On a system with 32-bit pointers, quintptr is a typedef for quint32; on a system with 64-bit pointers, quintptr is a typedef for quint64.
Note that quintptr is unsigned. Use qptrdiff for signed values.
In order to print values of this type by using formatted-output facilities such as printf(), qDebug(), QString::asprintf() and so on, you can use the following macros as format specifiers:
PRIuQUINTPTR: prints the value as a base 10 number.PRIoQUINTPTR: prints the value as a base 8 number.PRIxQUINTPTR: prints the value as a base 16 number, using lowercase a-f letters.PRIXQUINTPTR: prints the value as a base 16 number, using uppercase A-F letters.quintptr p = 123u; printf("The pointer value is 0x%" PRIXQUINTPTR "\n", p);
See also qptrdiff, quint32, and quint64.
Typedef for unsigned long long int (unsigned __int64 on Windows). This is the same as quint64.
See also quint64 and qlonglong.
Convenience typedef for unsigned char.
Convenience typedef for unsigned int.
Convenience typedef for unsigned long.
Convenience typedef for unsigned short.
[since 6.2] PRIdQINTPTR[since 6.2] PRIiQINTPTRSee qintptr.
This function was introduced in Qt 6.2.
[since 6.2] PRIXQUINTPTR[since 6.2] PRIoQUINTPTR[since 6.2] PRIuQUINTPTR[since 6.2] PRIxQUINTPTRSee quintptr.
This function was introduced in Qt 6.2.
[since 6.2] PRIdQPTRDIFF[since 6.2] PRIiQPTRDIFFSee qptrdiff.
This function was introduced in Qt 6.2.
[since 6.2] PRIdQSIZETYPE[since 6.2] PRIiQSIZETYPESee qsizetype.
This function was introduced in Qt 6.2.
[since 6.6] QT_SUPPORTS_INT128Qt defines this macro as well as the qint128 and quint128 types if the platform has support for 128-bit integer types.
This macro was introduced in Qt 6.6.
See also qint128, quint128, Q_INT128_C(), Q_UINT128_C(), Q_INT128_MIN, Q_INT128_MAX, and Q_UINT128_MAX.
[since 6.6] qint128 Q_INT128_C(literal)Wraps the signed 128-bit integer literal in a platform-independent way.
Note: Unlike Q_INT64_C(), this macro is only available in C++, not in C. This is because compilers do not provide these literals as built-ins and C does not have support for user-defined literals.
This macro was introduced in Qt 6.6.
See also qint128, Q_UINT128_C(), Q_INT128_MIN, Q_INT128_MAX, Q_INT64_C(), and QT_SUPPORTS_INT128.
[since 6.6] Q_INT128_MAXThis macro expands to a compile-time constant representing the maximum value representable in a qint128.
This macro is available in both C++ and C modes.
This macro was introduced in Qt 6.6.
See also Q_INT128_MIN, Q_UINT128_MAX, qint128, Q_INT128_C, and QT_SUPPORTS_INT128.
[since 6.6] Q_INT128_MINThis macro expands to a compile-time constant representing the minimum value representable in a qint128.
This macro is available in both C++ and C modes.
This macro was introduced in Qt 6.6.
See also Q_INT128_MAX, qint128, Q_INT128_C, and QT_SUPPORTS_INT128.
Wraps the signed 64-bit integer literal in a platform-independent way.
Example:
qint64 value = Q_INT64_C(932838457459459);
See also qint64, Q_UINT64_C(), and Q_INT128_C().
[since 6.6] quint128 Q_UINT128_C(literal)Wraps the unsigned 128-bit integer literal in a platform-independent way.
Note: Unlike Q_UINT64_C(), this macro is only available in C++, not in C. This is because compilers do not provide these literals as built-ins and C does not have support for user-defined literals.
This macro was introduced in Qt 6.6.
See also quint128, Q_INT128_C(), Q_UINT128_MAX, Q_UINT64_C(), and QT_SUPPORTS_INT128.
[since 6.6] Q_UINT128_MAXThis macro expands to a compile-time constant representing the maximum value representable in a quint128.
This macro is available in both C++ and C modes.
The minimum of quint128 is 0 (zero), so a Q_UINT128_MIN is neither needed nor provided.
This macro was introduced in Qt 6.6.
See also Q_INT128_MAX, quint128, Q_UINT128_C, and QT_SUPPORTS_INT128.
Wraps the unsigned 64-bit integer literal in a platform-independent way.
Example:
quint64 value = Q_UINT64_C(932838457459459);
See also quint64, Q_INT64_C(), and Q_UINT128_C().
