forked from AuroraMiddleware/gtk
59 lines
1.6 KiB
Markdown
59 lines
1.6 KiB
Markdown
Title: macOS Interaction
|
|
|
|
## macOS backend-specific functions
|
|
|
|
The functions in this section are specific to the GDK macOS backend.
|
|
To use them, you need to include the `<gdk/macos/gdkmacos.h>` header and
|
|
use the macOS-specific pkg-config `gtk4-macos` file to build your
|
|
application.
|
|
|
|
## Checking for the macOS backend
|
|
|
|
GDK can be built with support for multiple backends, which means you will
|
|
need to perform both compile time *and* run time checks if you wish to call
|
|
backend-specific API; for instance, the code sample below will guard the
|
|
calls to different backends, and error out on unsupported windowing systems:
|
|
|
|
```c
|
|
#ifdef GDK_WINDOWING_MACOS
|
|
#include <gdk/macos/gdkmacos.h>
|
|
#endif
|
|
#ifdef GDK_WINDOWING_WAYLAND
|
|
#include <gdk/wayland/gdkwayland.h>
|
|
#endif
|
|
#ifdef GDK_WINDOWING_X11
|
|
#include <gdk/x11/gdkx.h>
|
|
#endif
|
|
|
|
#ifdef GDK_WINDOWING_MACOS
|
|
if (GDK_IS_MACOS_DISPLAY (display))
|
|
{
|
|
// make macOS-specific calls here
|
|
}
|
|
else
|
|
#endif
|
|
#ifdef GDK_WINDOWING_WAYLAND
|
|
if (GTK_IS_WAYLAND_DISPLAY (display))
|
|
{
|
|
// make Wayland-specific calls here
|
|
}
|
|
else
|
|
#endif
|
|
#ifdef GDK_WINDOWING_X11
|
|
if (GDK_IS_X11_DISPLAY (display))
|
|
{
|
|
// make X11-specific calls here
|
|
}
|
|
else
|
|
#endif
|
|
g_error ("Unsupported GDK backend");
|
|
```
|
|
|
|
The compile time check is performed by using the `GDK_WINDOWING_*`
|
|
pre-processor symbols; there is one defined for each windowing system
|
|
backend built into GDK. For Wayland, the symbol is `GDK_WINDOWING_MACOS`.
|
|
|
|
The run time check is performed by looking at the type of the
|
|
[class@Gdk.Display] object. For Wayland, the display objects will be of type
|
|
`GdkMacosDisplay`.
|