New Features

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Version 2.2.16 supports crossing bonds, and has improved text display.

Version 2.1.15 can:

Reading and displaying atom lists;
The Minimum Font Size property, which specifies the minimum font size used to draw text.

Version 2.0.14 adds:

Interpreting and displaying .TGF files;
LoadMolFile can read versions 1, 2 and 3 .MOL files;
LoadRxnFile can read versions 1, 2 and 3 CTabs;
LoadTGFFile can read and interpret .TGF files;
BracketThickness specifies the thickness, in pixels, of lines when drawing brackets;
Additional options for GetAtomData;
Additional options for GetBondData;
Additional options for GetCount;
GetRGroupData returns information about reaction groups;
GetSGroupData returns information about superatoms;
GetAtomString returns string information about atoms;
GetRGroupString returns string information about reaction groups;
GetSGroupString returns string information about superatoms;

Intermediate versions were private releases.

Version 1.4.26 can display RXN files, introducing the following:

LoadRxnFile method, to read an RXN file;
SaveRxnFile method, to save an RXN file;
RxnFile property, to access the current .RXN file.
ArrowThickness property, to specify how to thick to draw the reaction arrow.
Two additional Items, ITEM_PLUS and ITEM_ARROW, to assist in the drawing of reactions.

Versions 1.1.17 to 1.3.25 fixed bugs.

Version 1.1.16 introduces developer licensing. Developers who wish to build applications with this control should purchase a copy of the license file and keep it in the same directory as they keep the control.

Version 1.1.15 introduced the following methods:

LoadEnhMetaFile to read a metafile for submitting to the server as part of a reaction;
SaveEnhMetaFile to save such a metafile back to the disk.

It also fixed the following bugs:

A change in ItemFont and certain other item properties is now displayed on the next redraw, not just when the control is resized;
Pasting reactions should be more reliable;
Submitting and obtaining reactions from the server should be faster.

Version 1.1.14 of the control fixed a couple of minor bugs which caused Visual Basic indigestion when daft values where fed to some of the control's floating point properties.

The following have been introduced with version 1.1.13 of the control:

The Chiral and ChiralText properties have been introduced;
A new item has been added to the item properties to permit control of the display of chiral text.

The following have been introduced with version 1.1.12 of the control:

The Experiment Name property has been introduced;
An Experiment Name search has been added to the SearchKey method.

The following have been introduced with version 1.1.11 of the control:

The StructureText property has been renamed StructureId;
The DDEService property has some additional checks.
A SQL new search has been added to the SearchKey method.

The following have been introduced with version 1.1.10 of the control:

The TestId has changed type to int;
SubmitStruct, when successful, sets the entry number property to the new one for the chemical.

The following have been introduced with version 1.1.9 of the control:

CalculateWeight calculates the chemical's molecular weight;
Connect has been enhanced to permit specification of service;
DoProperties displays the control's properties dialogue;
FireError specifies how errors should be processed;
GetRevision returns the chemical's audit revision;
MF contains the chemical's molecular formula;
Weight contains the chemical's molecular weight;
The Version property has been renamed VersionString, and its behaviour has changed;
Zoom zooms the window;
The behaviour of CalculateMF has changed so that it no longer sets the chemical's Molecular Formula - you should use the new MF to set (and get) this information.
Similarly, the new CalculateWeight method calculates the weight but does not set the chemical's weight - you should use the Weight property to do this.
A number of other properties have been added to assist the display of the component's Property Pages. This should not be used by other applications, since they are liable to change without notice.

The following have been introduced with version 1.1.8 of the control:

ExecutablePostMessage posts an Application message to the previous launched executable;
ExecutablePostWndMessage posts a message to the previous launched executable's main window;

The following have been introduced with version 1.1.7 of the control:

LoadTGFFile loads, but does not interpret, a .TGF file;
SaveTGFFile saves TGF information obtained from the server as a .TGF file;

Version 2.1.15, 1st May 2001