RAD Studio VCL Reference
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Indicates whether a window handle exists for the image list.
function HandleAllocated: Boolean;
__fastcall Boolean HandleAllocated();
Use HandleAllocated to determine if a handle exists for the image list. HandleAllocated returns true if the Windows image list has been created and a handle is available, false otherwise. HandleAllocated doesn't create a handle if it doesn't already exist.
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