setDeviceCursor
Sets a specific GdkCursor
for a given device when it gets inside @surface.
Passing null for the @cursor argument means that @surface will use the cursor of its parent surface. Most surfaces should use this default.
Use ctor@Gdk.Cursor.new_from_name or ctor@Gdk.Cursor.new_from_texture to create the cursor. To make the cursor invisible, use %GDK_BLANK_CURSOR.
Parameters
device
a pointer GdkDevice
cursor
a GdkCursor