Destroing unused widgets

[DeusExMachina]

I have a bunch of buttons on screen, and I need to draw another window with another controls set. In site documentation we have a gwinDefault() function to destroy widget, but it seems that this function not implemented yet.

If you do not longer need the widget, you simply pass it's handle to the gwinDefault() routine. All the allocated memory will be freed and the widget area will be cleared.

[Joel Bodenmann]

This clearly is a documentation typo. It's supposed to be gwinDestroy(). Thanks for finding, it has been fixed!

However, if you need different sets of controls, the tab widget might be of your interest too. The /demos/modules/gwin/widgets demo shows how it can be used (along the very simple example on the tab widget documentation page).

~ Tectu

[DeusExMachina]

I found that gwinDestroy() destroys only last created widget (GHANDLE parameter ignored).

Tab organization seems to be a huge overhead in RAM, because I need to have 17 tabs with many widgets, and this number can grow up.

[Joel Bodenmann]

I found that gwinDestroy() destroys only last created widget (GHANDLE parameter ignored).

Can you please show how to reproduce your problem? The source does clearly show how the passed handle is used:

void gwinDestroy(GHandle gh) {
        // Remove from the window manager
        #if GWIN_NEED_WINDOWMANAGER
                _GWINwm->vmt->Delete(gh);
        #endif

        // Class destroy routine
        if (gh->vmt->Destroy)
                gh->vmt->Destroy(gh);

        // Clean up the structure
        if (gh->flags & GWIN_FLG_DYNAMIC)
                gfxFree((void *)gh);

        gh->flags = 0;                                                  // To be sure, to be sure
}

~ Tectu

[DeusExMachina]

Sorry, it was my error. I destroyed widgets (and they destroyed on memory, but not on the screen), but and when I called gdispClear() which cleared only last widget area I thought that it is destructor problem. I need to reset output window by gdispUnsetClip() to all screen size and after that to clear it.