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Re: RectTracker filled with black [message #14532 is a reply to message #14517]

Fri, 29 February 2008 15:08

cbpporter is currently offline

cbpporter
Messages: 1427
Registered: September 2007

Ultimate Contributor

cbpporter wrote on Thu, 28 February 2008 12:12

OK, I'm giving up on RectTracker and doing it manually with mouse events and GetCapture(). I just can't get it to behave as as want it.

OK, I seems that U++ is having an undesired effect on me. I can no longer choose the easy way so easily Smile

Smile

. I was writing my manual code, and even though it was easy and worked fine, I felt it as highly redundant since there was already that RectTracker class.
So I sat down and managed to adapt it to my needs. I'm not posting the result, because I think it is not that general, it is more suited for graphics applications with precise cursor interaction, and also you have to adjust the coordinates returned by Track a little.

But there are still a couple of thing I would like to note:
1. I used ViewDraw and strangely, the drawings remain on my form even after it got covered by other windows. Does ViewDraw feature any cache or backbuffer?

2. In the code proposed by mrjt, I have found that the InflateVert(1) and InflateHorz(1) introduce a 1 pixel imprecision between mouse cursor, rect coordinates and visual representation of the drawn drag rect.

I have added include the test case I use to test coordinates.

Attachment: RectTest.rar
(Size: 1.45KB, Downloaded 423 times)

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[Message index]

		RectTracker filled with black By: cbpporter on Wed, 13 February 2008 06:54
		Re: RectTracker filled with black By: mirek on Wed, 13 February 2008 08:44
		Re: RectTracker filled with black By: mrjt on Wed, 13 February 2008 12:13
		Re: RectTracker filled with black By: cbpporter on Wed, 13 February 2008 12:40
		Re: RectTracker filled with black By: cbpporter on Wed, 13 February 2008 16:12
		Re: RectTracker filled with black By: cbpporter on Wed, 20 February 2008 09:33
		Re: RectTracker filled with black By: mrjt on Wed, 20 February 2008 10:55
		Re: RectTracker filled with black By: cbpporter on Wed, 20 February 2008 13:28
		Re: RectTracker filled with black By: mrjt on Wed, 20 February 2008 14:13
		Re: RectTracker filled with black By: cbpporter on Wed, 20 February 2008 14:19
		Re: RectTracker filled with black By: mrjt on Wed, 20 February 2008 14:52
		Re: RectTracker filled with black By: cbpporter on Wed, 20 February 2008 14:58
		Re: RectTracker filled with black By: cbpporter on Sun, 24 February 2008 22:21
		Re: RectTracker filled with black By: mirek on Tue, 26 February 2008 21:13
		Re: RectTracker filled with black By: cbpporter on Thu, 28 February 2008 11:12
		Re: RectTracker filled with black By: cbpporter on Fri, 29 February 2008 15:08
		Re: RectTracker filled with black By: mrjt on Fri, 29 February 2008 15:20
		Re: RectTracker filled with black By: cbpporter on Fri, 29 February 2008 15:34
		Re: RectTracker filled with black By: mirek on Mon, 03 March 2008 20:48
		Re: RectTracker filled with black By: cbpporter on Tue, 04 March 2008 10:24
		Re: RectTracker filled with black By: cbpporter on Thu, 20 March 2008 14:35
		Re: RectTracker filled with black By: cbpporter on Thu, 20 March 2008 15:31
		Re: RectTracker filled with black By: mirek on Sat, 22 March 2008 20:33
		Re: RectTracker filled with black By: mirek on Wed, 20 February 2008 13:57

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