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Help / WLanguage / WLanguage functions / Controls, pages and windows / Chart functions
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Stored procedures
Erases the chart drawing (in an Image control or in a window).
Remark: The graph is not destroyed. The chart data and parameters are stored in memory. Simply call grDraw to re-display the chart.
Linux Caution: In Linux, this function requires a specific configuration. For more details, see The charts.
Example
// Effacement du graphe "MonGraphe"
grClearPict("MonGraphe")
Syntax
grClearPict(<Chart name>)
<Chart name>: Control name or character string
Name of the chart to erase. This name corresponds to:
  • the name of the chart defined programmatically with grCreate.
  • the name of the Chart control (in the window or page editor).
Remarks
  • If the chart is drawn in an independent window, the window is closed.
  • grClearPict has no effect if the chart is not drawn.
  • grClearPict has no effect in reports.
  • To delete the chart data, use grDeleteSeries or grDeleteAll.
Related Examples:
The Chart functions Unit examples (WINDEV): The Chart functions
[ + ] Using the main chart designer features of WINDEV:
- Create a Pie, Column or Line chart
- Define the display area of a chart
- Define the chart options (legend, percentage, ...)
- Draw a line on a chart
WD Chart Training (WINDEV): WD Chart
[ + ] This example presents the different uses of the Chart control.
Different types of charts are presented:
- Pie
- Sunburst
- Line
- Scatter
- Column
- Area
- etc.

The main features presented here are the possibility to customize of charts from the code, as well as to fill the chart from an HFSQL data file, or in the editor.
Component: wd300grf.dll
Minimum version required
  • Version 9
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Last update: 03/28/2025

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