How to convert a char array to a qstring

1. Call the data function conversion of the closed beam module string.

2. Use the C str function of string to transfer the car slowly**.

3. Use the copy function of string to convert to slag.

4. Convert string to char method.

5. Use char to convert to string method.

3. All constructors can be converted by default;

qbytearray badata;

qstring str = qstring(badata);

Convert the other way around;

qbytearray by1 = ;

qbytearray by2 = ;

One. Basic concepts.

QT is a cross-platform C++ graphical user interface application development framework developed by Qiqu Technology in 1991. It can be used to develop both GUI and non-GUI programs, such as console tools and servers. Qt is an object-oriented framework that uses a special generation extension called a meta object compiler (moc) and some macros that are easily extensible and allow component programming.

QT is a cross-platform C++ graphical user interface application framework developed by Qiqu Technology in 1991. It provides application developers with all the features they need to build state-of-the-art graphical user interfaces.

Two. Platform support.

、vista、win7、win8、win2008；

Linux, Sunsolaris, HP-UX, Compaqtru64 UNIX, IBMAIX, SGI IIRIX, FreeBSD, BSD OS and many other x11 platforms;

mac os x；

Embedded Linux platform with framebuffer support, Windows CE;

symbian^3 symbian anna symbian belle。

char* is a pointer that stores the address of continuous char data. This address could be a fixed string shirt wheel in a static area, or it could be a pointer to an array created elsewhere.

For data transformations, the location that char* points to is an array of char. If you want to explicitly save to another array, you can use a word or letter string copy function, or a memory copy closure function.

For example: Create an array of strings.

char arr[10] =

Create a pointer and point to a string "abc" stored in the static area

char* tmp = abc";

Copy using the string copy function.

strcpy(arr, tmp);

For example, the memory copy function is used to copy.

memcpy(arr, tmp, sizeof(arr));