How much time takes a form to resize?

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How much time takes a form to resize?

In order to compare performance of custom drawing I need to calculate the time a form takes to resize (or maximize - pass from its normal to maximized state).

Where should I start / stop the StopWatch?

Tried OnResize/OnSizeChanged and also OnResizeBegin/OnResizeEnd but both depends of how quick I drag the mouse...

In the form's Resize and SizeChanged events. SizeChanged is first, start there, then Resize.

You might need to use the Layout event. Check event's documentation for event order.

Also, you may find EventSpy helpful. There is an option for a timestamp and you can "spy" on certain events of specific controls. (EventSpy at ftp://missico.net/EventSpy.zip.)

AMissico 2010-06-21 10:00:14

As far as I read, Layout is like Resize, I know only the startPoint... EventSpy... son't know, but think the problem remain the same, the endpoint. By the way I try to measure the `OnPaint + OnPaintBackground` performance.

serhio 2010-06-21 10:37:15

Nor Resize/OnSizeChanged didn't help, see the update.

serhio 2010-06-21 10:45:51

@serhio: Do not use human interaction to set maximize. Do it through code. Create a method that does this, and using Stopwatch in this method.

AMissico 2010-06-21 14:45:45

@AMissico: "human interaction" was used not for maximize(this action is done in a click) but for resize the form... And for use in a method I need a method Maximize, but this is a property that I suppose does asynchrously the maximization...

serhio 2010-06-21 22:01:39

@serhio: To resize, change the form's size through code. Create a module with "sub main", start application through the main procedure, create form, show form, set form's size property. Do the same for form's window state. Also, do for form's location.

AMissico 2010-06-21 23:48:45

Temporary solution is to use (on the parent Form) New(constructor) ==> OnShown. This is, surely, not just the resizing time but at least does not depend of the user speed of drag...

serhio 2010-06-21 12:22:26

ansaurus

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How much time takes a form to resize?

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