matlab-GUI程序(1)

最新推荐文章于 2021-04-01 19:45:49 发布

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最新推荐文章于 2021-04-01 19:45:49 发布 · 282 阅读

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#matlab

这篇博客介绍了MATLAB中guidata函数的使用，它用于在GUI程序中存储和检索应用数据。通过示例展示了如何在回调函数中利用guidata与guihandles结合，管理和传递GUI组件的句柄及自定义数据。此外，还提及了GUIDE自动生成的回调函数如何自动处理数据结构。

guidata用来保存handles结构，可以做为窗口间参数的传递。

>> help guidata
GUIDATA Store or retrieve application data.
    GUIDATA(H, DATA) stores the specified data in the figure's
    application data.

    H is a handle that identifies the figure - it can be the figure
    itself, or any object contained in the figure.

    DATA can be anything an application wishes to store for later
    retrieval.

    DATA = GUIDATA(H) returns previously stored data, or an empty
    matrix if nothing was previously stored.

    GUIDATA provides application authors with a convenient interface
    to a figure's application data. You can access the data from a
    callback subfunction using the component's handle, without needing
    to find the figure's handle. You can also avoid having to create
    and maintain a hardcoded property name for the application data
    throughout your source code. GUIDATA is particularly useful in
    conjunction with GUIHANDLES, which returns a structure containing
    handles of all the components in a GUI listed by tag.

    Example:

    Suppose an application creates a figure with handle F, containing
    a slider and an editable text uicontrol whose tags are
    'valueSlider' and 'valueEdit' respectively. The following
    excerpts from the application's M-file illustrate the use of
    GUIDATA to access a structure containing handles returned by
    GUIHANDLES, plus additional application-specific data added during
    initialization and callbacks:

&nb