In the 'Extra Code' field put #include 'MyWindow.H', so that the FLUID output file will compile.This will make FLUID produce constructors for your new class. In the widget panel fill in the 'class' field with MyWindow.Putting your class definition in a MyWindow.H file.You can also use your new window class in FLUID by: Your main program can now create one of your windows by doing new MyWindow(.). For double-buffered windows you will need to surround the drawing code with the following code to make sure that both buffers are redrawn: If your subclass provides static controls in the window, they must be redrawn whenever the FL_DAMAGE_ALL bit is set in the value returned by damage(). A handle() method if you need to receive input from the user.To make a subclass of Fl_Gl_Window, you must provide: Some simple coding rules (see OpenGL and 'retina' displays) allow to write cross-platform code that will draw high resolution OpenGL graphics if run on 'retina' displays with Mac OS X. It will include the file, define some extra drawing functions provided by FLTK, and include the header file needed by WIN32 applications. To do this you use the gl_start() and gl_finish() functions around your OpenGL code. This allows you to use Gouraud shading for drawing your widgets. With a bit of care you can also use OpenGL to draw into normal FLTK windows. Your main program should call redraw() when the display needs to change, and (somewhat later) FLTK will call draw(). Your subclass must implement a draw() method which uses OpenGL calls to draw the display. The easiest way to make an OpenGL display is to subclass Fl_Gl_Window. Product is based on a published Khronos Specification and has been submitted to, and is expected to pass, the Khronos Conformance Process.This chapter discusses using FLTK for your OpenGL applications. This package supports apps that use OpenCL version 1.2 and earlier and OpenGL version 3.3 and earlier. If a DirectX 12 driver is installed, supported apps will run with hardware acceleration for better performance. Current conformance status can be found at This compatibility pack allows more of your favorite OpenCL™ and OpenGL® apps to run on a Windows 10 PC that doesn't have OpenCL and OpenGL hardware drivers installed by default. Product is based on a published Khronos Specification and has been submitted to, and is expected to pass, the Khronos Conformance Process. OpenGL® and the oval logo are trademarks or registered trademarks of Hewlett Packard Enterprise in the United States and/or other countries worldwide. Complete license details are available on the Apple website (). OpenCL and the OpenCL logo are trademarks of Apple Inc.

This compatibility pack allows more of your favorite OpenCL™ and OpenGL® apps to run on a Windows 10 PC that doesn't have OpenCL and OpenGL hardware drivers installed by default.

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