Q_GLOBAL_STATIC_WITH_ARGS 怎么用
时间: 2023-07-31 21:11:40 浏览: 55
To use Q_GLOBAL_STATIC_WITH_ARGS to declare and instantiate a global static object with arguments, you need to follow these steps:
1. Include the QtCore/qglobal.h header file in your source code.
2. Define a struct or class that has a constructor that takes arguments. For example:
```
struct MyStruct {
MyStruct(int arg1, const QString& arg2) {
// Constructor code
}
};
```
3. Use the Q_GLOBAL_STATIC_WITH_ARGS macro to declare and instantiate the global static object. The macro takes three arguments: the name of the struct or class, the name of the global static object, and the constructor arguments. For example:
```
Q_GLOBAL_STATIC_WITH_ARGS(MyStruct, myGlobalObject, (42, "Hello"))
```
This creates a global static object named `myGlobalObject`, of type `MyStruct`, with constructor arguments `(42, "Hello")`.
4. You can then use the `myGlobalObject` object in your code as needed.
Note that the constructor arguments must be enclosed in parentheses, even if there is only one argument. Also, make sure that the arguments are properly formatted and match the constructor signature of the struct or class you are using.