Following steps are required for initialization:

InitOSFunctionPointers();   // Load OS functions
InitPadScoreFunctionPointers();
InitVPadFunctionPointers(); // Input functions for GUI control
InitFSFunctionPointers();   // To load file from the SD Card
InitGX2FunctionPointers();  // For rendering
InitAXFunctionPointers();   // For sound

mount_sd_fat("sd");			// Mounting the SD Card
memoryInitialize();			// Initialize memory management

//DO GUI STUFF HERE!

memoryRelease();
unmount_sd_fat("sd");

Link the application with:

-lgui -lutils -ldynamiclibs -lfreetype -lgd -lpng -ljpeg -lz -lmad -lvorbisidec -logg -lbz2

You also need to add the include path to your Makefile. Example:

export INCLUDE	:= [...] -I$(PORTLIBS)/include/freetype2 \
						 -I$(PORTLIBS)/include/libgui \
						 -I$(PORTLIBS)/include

TODO: provide more information

To be able to use libgui, you need to install the following dependencies:

• Application needs to be loaded from the homebrew_launcher

• libutils for common functions.

• dynamic_libs for access to the functions.

• Install the required portlibs via (dkp-)pacman -Syu ppc-zlib ppc-libmad ppc-libogg ppc-libgd ppc-freetype ppc-libjpeg-turbo ppc-libpng ppc-libvorbisidec ppc-glm ppc-bzip2

The image wiiulegacy/libgui on Docker Hub provides a prebuilt library in the /artifacts directory. Copy it into your DevkitPPC portlibs folder.

Example:

COPY --from=wiiulegacy/libgui:0.1 /artifacts $DEVKITPRO/portlibs

• Orignally based on https://github.com/dborth/libwiigui
• Wii U port / modification / new functions / sound / much more by dimok.
• Minor changes by Maschell