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Add documentation of Fl_Surface_Device::end_current().

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ManoloFLTK
2021-10-31 06:47:18 +01:00
parent 4d88fb6fbc
commit 96034b5657
1 changed files with 4 additions and 2 deletions
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FL/Fl_Device.H
+4 -2
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@@ -67,8 +67,10 @@ class FL_EXPORT Fl_Surface_Device {
static Fl_Surface_Device *surface_; // the surface that currently receives graphics requests static Fl_Surface_Device *surface_; // the surface that currently receives graphics requests
static Fl_Surface_Device *default_surface(); // create surface if none exists yet static Fl_Surface_Device *default_surface(); // create surface if none exists yet
protected: protected:
/* Some drawing surfaces (e.g., Fl_XXX_Image_Surface_Driver) re-implement this. /** FLTK calls this each time a surface ceases to be the current drawing surface.
Gets called each time a surface ceases to be the current drawing surface. */ This member function is mostly of interest to developers of new Fl_Surface_Device derived classes.
It allows to perform surface-specific operations necessary when this surface ceases to be current.
Each implementation should end with a call to Fl_Surface_Device::end_current(). */
virtual void end_current() { surface_ = 0;} virtual void end_current() { surface_ = 0;}
/** Constructor that sets the graphics driver to use for the created surface. */ /** Constructor that sets the graphics driver to use for the created surface. */
Fl_Surface_Device(Fl_Graphics_Driver *graphics_driver) {pGraphicsDriver = graphics_driver; } Fl_Surface_Device(Fl_Graphics_Driver *graphics_driver) {pGraphicsDriver = graphics_driver; }