mirrors/SingleApplication
1
0
Fork 0
mirror of https://github.com/itay-grudev/SingleApplication.git synced 2024-11-15 12:15:43 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

Merge pull request #181 from dschulz/master

Browse Source 
Add an example using CMakes FetchContent module
This commit is contained in:
Itay Grudev 2024-02-03 21:44:02 +02:00 committed by GitHub
commit 448a7b525f
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
1 changed files with 44 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

44
README.md
View File

@ -60,6 +60,50 @@ add_subdirectory(src/third-party/singleapplication)
target_link_libraries(${PROJECT_NAME} SingleApplication::SingleApplication)
```
Directly including this repository as a Git submodule, or even just a shallow copy of the
source code into new projects might not be ideal when using CMake.
Another option is using CMake's `FetchContent` module, available since version `3.11`.
```cmake
# Define the minumun CMake version, as an example 3.24
cmake_minimum_required(VERSION 3.24)
# Include the module
include(FetchContent)
# If using Qt6, override DEFAULT_MAJOR_VERSION
set(QT_DEFAULT_MAJOR_VERSION 6 CACHE STRING "Qt version to use, defaults to 6")
# Set QAPPLICATION_CLASS
set(QAPPLICATION_CLASS QApplication CACHE STRING "Inheritance class for SingleApplication")
# Declare how is the source going to be obtained
FetchContent_Declare(
SingleApplication
GIT_REPOSITORY https://github.com/itay-grudev/SingleApplication
GIT_TAG master
#GIT_TAG e22a6bc235281152b0041ce39d4827b961b66ea6
)
# Fetch the repository and make it available to the build
FetchContent_MakeAvailable(SingleApplication)
# Then simply use find_package as usual
find_package(SingleApplication)
# Finally add it to the target_link_libraries() section
target_link_libraries(ClientePOS PRIVATE
Qt${QT_VERSION_MAJOR}::Widgets
Qt${QT_VERSION_MAJOR}::Network
Qt${QT_VERSION_MAJOR}::Sql
SingleApplication::SingleApplication
)
```
The library sets up a `QLocalServer` and a `QSharedMemory` block. The first
instance of your Application is your Primary Instance. It would check if the
shared memory block exists and if not it will start a `QLocalServer` and listen