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9 sie 2021 · Just add a TChartListbox to the form and link its Chart property to the chart of interest. The project listboxdemo demonstrates that there is a two-way communication between chart and listbox: when listbox items are checked/unchecked the corresponding series are shown/hidden.
5 paź 2022 · Each tool is specialized to some specific action. From the user point of view, there are two types of tools: Extent tools and data tools. Extent tools modifiy the extent of the chart -- this is the visible viewport -- i.e. they are responsible for zooming and panning.
3 lut 2011 · 1. Add a 'embedded form' close method to the main form. 2. Set the embedded's form OnClose handler to this close method.
The button click should just call Close (for the form) which, if it's the main form, will close the application. That will in turn fire the OnClose event: if you re-Click the button there you are caught in an infinite loop, so don't do that.
Now, the next step is to configure the second form: initially, we close the first form, which we can accomplish using the button we created labeled "Close". Afterward, we click on the heading "Unit2" in the Code Editor and press F 12 to display the second form. classes, type TFom.2 — Graphics,
13 kwi 2023 · This is the standard Lazarus package for drawing plots and charts. In this tutorial we will draw some elemental mathematical functions by TAChart. We will create a chart with three line series for the functions. y=cos (x), y=sin (x), and. y=cos (x)*sin (x).
29 wrz 2024 · Chart tools define how the chart reacts to various user actions, primarily mouse movements and clicks. You can see examples of tools usage in the "tools" or "barseriestools" demos. Tools are grouped in a TChartToolset component, which should be assigned to the chart's Toolset property.
