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We know how many items will be processed (), which holds the current percentage of processed items.
It is updated from the worker thread and is read from a timer on a form.
Instantiate the progress bar, with its optional title: Optionally, you can also update the ‘Caption’ property of the progress bar, so that the progress can be displayed both visually and as text: The main ‘gotcha’ that you are likely to encounter when using the Progress bar is that you will often be dealing with integer values when calculating progress – for example, fifty-five records processed out of a hundred.
Look what happens when we use these integers to calculate the progress: Why doesn’t the progress bar display correctly as it does here?
MAP_CB, UNMAP_CB, DESTROY_CB: common callbacks are supported.
In GTK uses Gtk Progress Bar, in Windows uses PROGRESS_CLASS, and in Motif uses xm Scale.
The ‘2.c’ example below shows a simpler way of accessing such shared variable – a TGp4Aligned Int record.
You can use any approach (TInterlocked or TGp4Aligned Int) with any multithreading library (PPL, OTL, or anything else).
The Progress Bar class manages the current progress, and the format of the line is given by a number of widgets.
Set to NULL to allow the use of smaller values in the layout computation.
VALUE ( ACTIVE, EXPAND, FONT, SCREENPOSITION, POSITION, MINSIZE, MAXSIZE, WID, TIP, SIZE, ZORDER, VISIBLE, THEME: also accepted.
Hello all, I am having the following issue; the GUI I have built does not update when a standard C operation takes place.
I want to have a QProgress Bar that continuously moves (since I do not know how long it will take) until the file import is completed.