PtrArray

Pointer Arrays are similar to Arrays but are used only for storing pointers.

Note

If you remove elements from the array, elements at the end of the array are moved into the space previously occupied by the removed element. This means that you should not rely on the index of particular elements remaining the same. You should also be careful when deleting elements while iterating over the array.

To create a pointer array, use g_ptr_array_new().

To add elements to a pointer array, use g_ptr_array_add().

To remove elements from a pointer array, use g_ptr_array_remove(), g_ptr_array_remove_index() or g_ptr_array_remove_index_fast().

To access an element of a pointer array, use g_ptr_array_index().

To set the size of a pointer array, use g_ptr_array_set_size().

To free a pointer array, use g_ptr_array_free().

Constructors

this this(GPtrArray* gPtrArray): Sets our main struct and passes it to the parent class
this this(): Creates a new GPtrArray with a reference count of 1.
this this(GDestroyNotify elementFreeFunc): Creates a new GPtrArray with a reference count of 1 and use element_free_func for freeing each element when the array is destroyed either via g_ptr_array_unref(), when g_ptr_array_free() is called with free_segment set to TRUE or when removing elements. Since 2.22
this this(uint reservedSize, GDestroyNotify elementFreeFunc): Creates a new GPtrArray with reserved_size pointers preallocated and a reference count of 1. This avoids frequent reallocation, if you are going to add many pointers to the array. Note however that the size of the array is still 0. It also set element_free_func for freeing each element when the array is destroyed either via g_ptr_array_unref(), when g_ptr_array_free() is called with free_segment set to TRUE or when removing elements. Since 2.30

Members

Functions

add void add(void* data): Adds a pointer to the end of the pointer array. The array will grow in size automatically if necessary.
doref PtrArray doref(): Atomically increments the reference count of array by one. This function is thread-safe and may be called from any thread. Since 2.22
foreac void foreac(GFunc func, void* userData): Calls a function for each element of a GPtrArray. Since 2.4
free
void** free(int freeSeg): Frees the memory allocated for the GPtrArray. If free_seg is TRUE it frees the memory block holding the elements as well. Pass FALSE if you want to free the GPtrArray wrapper but preserve the underlying array for use elsewhere. If the reference count of array is greater than one, the GPtrArray wrapper is preserved but the size of array will be set to zero. Note If array contents point to dynamically-allocated memory, they should be freed separately if free_seg is TRUE and no GDestroyNotify function has been set for array.
getPtrArrayStruct GPtrArray* getPtrArrayStruct(): Get the main Gtk struct
getStruct void* getStruct(): the main Gtk struct as a void*
remove int remove(void* data): Removes the first occurrence of the given pointer from the pointer array. The following elements are moved down one place. If array has a non-NULL GDestroyNotify function it is called for the removed element. It returns TRUE if the pointer was removed, or FALSE if the pointer was not found.
removeFast int removeFast(void* data): Removes the first occurrence of the given pointer from the pointer array. The last element in the array is used to fill in the space, so this function does not preserve the order of the array. But it is faster than g_ptr_array_remove(). If array has a non-NULL GDestroyNotify function it is called for the removed element. It returns TRUE if the pointer was removed, or FALSE if the pointer was not found.
removeIndex void* removeIndex(uint index): Removes the pointer at the given index from the pointer array. The following elements are moved down one place. If array has a non-NULL GDestroyNotify function it is called for the removed element.
removeIndexFast void* removeIndexFast(uint index): Removes the pointer at the given index from the pointer array. The last element in the array is used to fill in the space, so this function does not preserve the order of the array. But it is faster than g_ptr_array_remove_index(). If array has a non-NULL GDestroyNotify function it is called for the removed element.
removeRange void removeRange(uint index, uint length): Removes the given number of pointers starting at the given index from a GPtrArray. The following elements are moved to close the gap. If array has a non-NULL GDestroyNotify function it is called for the removed elements. Since 2.4
setFreeFunc void setFreeFunc(GDestroyNotify elementFreeFunc): Sets a function for freeing each element when array is destroyed either via g_ptr_array_unref(), when g_ptr_array_free() is called with free_segment set to TRUE or when removing elements. Since 2.22
setSize void setSize(int length): Sets the size of the array. When making the array larger, newly-added elements will be set to NULL. When making it smaller, if array has a non-NULL GDestroyNotify function then it will be called for the removed elements.
sort void sort(GCompareFunc compareFunc): Sorts the array, using compare_func which should be a qsort()-style comparison function (returns less than zero for first arg is less than second arg, zero for equal, greater than zero if irst arg is greater than second arg). Note The comparison function for g_ptr_array_sort() doesn't take the pointers from the array as arguments, it takes pointers to the pointers in the array. This is guaranteed to be a stable sort since version 2.32.
sortWithData void sortWithData(GCompareDataFunc compareFunc, void* userData): Like g_ptr_array_sort(), but the comparison function has an extra user data argument. Note The comparison function for g_ptr_array_sort_with_data() doesn't take the pointers from the array as arguments, it takes pointers to the pointers in the array. This is guaranteed to be a stable sort since version 2.32.
unref void unref(): Atomically decrements the reference count of array by one. If the reference count drops to 0, the effect is the same as calling g_ptr_array_free() with free_segment set to TRUE. This function is MT-safe and may be called from any thread. Since 2.22

Static functions

sizedNew PtrArray sizedNew(uint reservedSize): Creates a new GPtrArray with reserved_size pointers preallocated and a reference count of 1. This avoids frequent reallocation, if you are going to add many pointers to the array. Note however that the size of the array is still 0.

Variables

gPtrArray GPtrArray* gPtrArray;: the main Gtk struct