SimpleChart - Version History

Licensed users of SimpleChart can get the latest version on the Upgrades Page.

v2.2.3 - 12 November 2009

This is a maintenance release which includes the following bug fixes:

Calling the Refresh method in the AxisChart and PieChart ActiveX controls causes a noticeable flash. - this problem has been fixed in this release.

Note: this fix only affects the ActiveX controls and not the chart generator COM objects normally used by web site developers.

v2.2.2 - 03 June 2009

This is a maintenance release which includes the following bug fixes:

Values labels not displayed on AxisChart where data vales are so small that no bar is drawn - this problem is rectified in this release so that value labels will always be drawn even where no bar is drawn.
AxisChart 'Appearance' property sheet 'Show Border Around Values' option had no effect on chart appearance when changed - this problem is rectified in this release.

v2.2.1 - 21 May 2009

This release includes the following bug fix:

Html Image Map for Pie Charts not generating correctly - this problem is rectified in this release.

v2.2 - 2 February 2009

This release adds the following new features to SimpleChart:

Unicode Support - SimpleChart now has support for globalisation.
Manual Increment for Unit Axis - instead of letting SimpleChart decide the bext increment setting on the unit axis you can now override this using the new UnitAxisIncrementMode and UnitAxisIncrement properties.
Improved default color scheme - charts now look better right out of the box with better default color settings.
ValueFormat property enhanced - the ValueFormat property has been reworked to provide support for international number formats through the use of addition properties: DecimalSeparatorSymbol and ThousandSeparatorSymbol.
New AxisVisiblityMode property lets you completely hide the axes of the chart.
New StartAngle property for pie charts lets you specify the angle at which the first pie segment will be drawn.
New PieLegendDisplayMode property gives you more control over how the legend is displayed. For example, you can now choose to display the item label along with the value and even the percentage.

v2.1.8 - 18 November 2005

This is a minor release that fixes the specific problems detailed below:

Using the 'SaveToFile' method of AxisChart and PieChart ActiveX controls resulted in the saved chart image using the default size of 300x300 pixels instead of the size defined on the form.

This problem has been fixed in this release.

v2.1.7 - 21 October 2005

This is a minor release that fixes the specific problems detailed below:

Accessing certain properties from Visual Basic sometimes created the following error

Function or interface marked as restricted...

This has been fixed in this release.

v2.1.6 - 3 August 2005

This is a minor release that fixes the specific problems detailed below:

Under certain curcumstances, deleting data items from the collections caused memory leaks.

v2.1.5 - 5 July 2005

This is a minor release that fixes the specific problems detailed below:

When using either the AxisChart or PieChart ActiveX controls over prolonged periods (for example, changing data displayed 25,000 times), memory leaks occurred. This problem has been fixed in this version.

v2.1.3 - 20 May 2005

This is a minor release that fixes the specific problems detailed below:

In AxisCharts with line series, if you hide some of the data items on the line series the line symbols continue to be drawn for the hidden items. This problem is fixed in this release.
The help file that accompanies SimpleChart has been updated to fix some minor inaccuracies.

v2.1.2 - 13 May 2005

This is a minor release that fixes the specific problem detailed below:

Generating pie charts using either the PieChart ActiveX control or the PieChartGenerator object occasionally caused an endless loop in SimpleChart when extremely small values are used in combination with extremely large values.

This problem is fixed in this release.

v2.1.1 - 27 April 2005

This is a minor release that fixes the specific problem detailed below:

Setting certain properties and calling certain methods on either the AxisChartControl or the PieChartControl ActiveX objects whilst the controls were invisible on a form caused either a runtime error or the new setting was ignored.

For example, changing the width and height of a chart that was invisible on a form could sometimes result in the new width and height settings being ignored.

Similarly, calling the SaveToFile method on a chart control that had not been made visible could result in a runtime error.

v2.1 - 7 April 2005

It's now possible to selectively show or hide values for individual data items.
You can now selectively override the color settings for individual data items. This is a great way to highlight data items of interest.
Symbols for line series data items.
You can now selectively show or hide percentage values for individual data items on pie charts.
Added powerful new ValueFormat property to specify the format used to display values on charts.
Added CopyToClipboard method.
Axis tick and label visibility is now completely configurable.
Added more options to let you configure how grid lines are displayed. Also added the ability to show unit axis gridlines.
You can now specify a background image for your chart and also the chart rectangle. You can also adjust the opacity of the images so that they don't overpower the chart data itself.
New ValueFormat property allows custom formatting of values on the chart.

v2.0.6 - 13 July 2004

Gif Generation Bug Fix. Gif image generation now works as described in the help file.
Memory Leak Bug Fix. This release also fixes a memory leak related to string storage that occurs when SimpleChart has been running for an extended period.

v2.0.5 - 7 July 2004

Added Gif Image Support. Now that the UniSys LZW patent has expired we have added Gif support to SimpleChart for use in the SaveToFile and SaveToStream methods.
GDI Leak Fixed. This release also fixes a small GDI leak that occurs when SimpleChart has been running for an extended period. (Please note that this fix only applies to the ActiveX controls in the SimpleChart product. This bug did not affect SimpleChart when used on web servers using the chart generator objects.)

v2.0.4 - 3 December 2003

'BorderVisible' property bug. This release fixes a bug that occurs when trying to make the chart border invisible in web page using the chart generator classes.

Previously, the right and bottom border was still visible in some circumstances, even though the BorderVisible had been set to false.

v2.0.3 - 17 November 2003

Visual Basic FormLoad bug. This release fixes a bug that occurs when trying to use the SaveToFile or SaveToStream methods from within the Form_Load event of a Visual Basic Form.

Previously calls to either of these methods in the Form_Load event would produce the following message:

Run-time error '-2147467259 (80004005)': Method 'SaveToFile' of object 'IAxisChart3' failed.

v2.0.2 - 16 October 2003

Visual Basic Printing fix. This release fixes a bug when printing from Visual Basic 6 using the PrintForm command. Forms with a SimpleChart control on them did not print properly: the printed chart was clipped at the bottom of the chart.

v2.0.1 - 2 October 2003

Improvements to layout engine. The Axis chart layout engine now has improved support for large numbers of data items.
Improvements to plotting calculations. Previous versions of SimpleChart intermittently plotted inaccurate bars and lines on Axis charts when using manual scaling. This is fixed in this version.

v2.0 - 4 July 2003

Support for mutiple data series
Combined bar and line chart components into one component (AxisChart). This allows bar and line data to be shown on the same chart.
Manual scaling. You can now set the unit axis scale min and max values manually to provide custom unit axis scaling.
Extensive font support. Fonts displayed on the chart are now fully configurable by the programmer. Font control now covers font name, font size and font color.
Chart Images. Extensive support has been added to enable the use of images in data items. An image can be specified for a particular data item and can be stretched, tiled or drawn on the chart.
New stacked bar charts. Bar series on an AxisChart can be stacked on top of each other to created a 'Stacked Bar Chart' or a '100% Stacked Bar Chart'.
Constant Line Collection. AxisCharts now have a constant line collection which is useful for displaying things like thresholds or limits.
Enhanced rendering control. SimpleChart v2.0 still supports antialiased rendering but we've added more options to let you control how antialiasing is applied when charts are drawn. There are four options: AntiAliasAll, AntiAliasNone, AntiAliasTextOnly, AntiAliasGrasphicsOnly.

v1.1 - 14 February 2003

New text layout engine:

All of the charts in SimpleChart now benefit from a new text layout engine which provides significantly better support for longer titles and labels on charts. For example, there are no longer any clipping issues when very long chart titles are used.
Improved chart layout engine:

All of the charts have a much improved layout engine. This provides subtle but noticeable improvements to the look of the charts. For example, the pie chart no longer suffers from being too small when the chart is has certain dimensions.
Better support for small values:

Bar and line charts now support graduations as small 0.001.
New Properties:
- ShowValuesBorder - borders around value labels are now toggleable.
- LegendPosMode - Pie chart legend can now be positioned either on the left or right.
- PieDiameterMode + PieDiameter - Pie chart diameter can now be set manually as well as automatically.

v1.0.2 - 13 January 2003

Fixed multiple segmented pie chart problem - related to how other 3rd party components utilised the IPersistStream interface.
Fixed runtime licensing problems for the the ActiveX chart controls - applications built with Visual Basic 6 and Visual Studio.NET sometimes produced runtime licensing errors.

v1.0 - 23 September 2002

SimpleChart was born!

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