QML has a set of primitive types, as listed below, that are used throughout the QML 元素 .
| action | Type has all the properties of QAction |
| bool | A boolean is a binary true/false value |
| color | A color is a standard color name in quotes |
| date | A date is specified as "YYYY-MM-DD" |
| double | A double number has a decimal point and is stored in double precision |
| enumeration | An enumeration type consists of a set of named values |
| font | A font type has the properties of a QFont |
| int | An integer is a whole number, e.g. 0, 10, or -20 |
| list | A list of objects |
| point | A point type has x and y attributes |
| real | A real number has a decimal point, e.g. 1.2 or -29.8 |
| rect | A rect type has x, y, width and height attributes |
| size | A size type has width and height attributes |
| string | A string is a free form text in quotes, e.g. "Hello world!" |
| time | A time is specified as "hh:mm:ss" |
| url | A URL is a resource locator, like a file name |
| variant | A variant type is a generic property type |
| vector3d | A vector3d type has x, y, and z attributes |
To create additional types, such as data types created in C++, read the 使用 C++ 扩展 QML 功能 article.
