System.Classes.TResourceStream.CreateFromID
Delphi
constructor CreateFromID(Instance: THandle; ResID: Integer; ResType: PChar);
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
| constructor | public | System.Classes.pas | System.Classes | TResourceStream |
Description
Creates an instance of TResourceStream associated with a particular resource ID and type.
Call CreateFromID to instantiate a TResourceStream for a resource in the indicated instance that can be identified by an integer ID. Create finds the resource data and loads it into the Memory buffer for the TResourceStream.
The Instance parameter is the instance handle associated with the executable or shared library that contains the resource.
The ResID is the integer ID associated with the resource in the .rc file that was compiled with the application. If the Resource was identified by a string rather than an ID number, use the Create method instead.
The ResType parameter is a string identifying the type of the resource. Applications can define their own resource types and identify them by name in the .rc file. In addition, there are a number of predefined resource types (which reflect Windows resource types). To identify a resource that is one of the predefined resource types, set ResType to the appropriate value from the following table:
| ResType | Type of resource |
|---|---|
|
RT_ACCELERATOR |
Accelerator table |
|
RT_BITMAP |
Bitmap resource |
|
RT_DIALOG |
Dialog box |
|
RT_FONT |
Font resource |
|
RT_FONTDIR |
Font directory resource |
|
RT_MENU |
Menu resource |
|
RT_RCDATA |
Application-defined resource (raw data) |
|
RT_STRING |
String-table entry |
|
RT_MESSAGETABLE |
Message-table entry |
|
RT_CURSOR |
Hardware-dependent cursor resource |
|
RT_GROUP_CURSOR |
Hardware-independent cursor resource |
|
RT_ICON |
Hardware-dependent icon resource |
|
RT_GROUP_ICON |
Hardware-independent icon resource |
|
RT_VERSION |
Version resource |
Note: Specifying resources by ID requires less memory than specifying resources by name.