Thought I'd put this down as it took me ages to search the Internet for this solution.  In the end, I found it hidden away in the Autohotkey help file and not under the gui events...

The issue here is if you want to do something when a user resizes your program. 

If you search and search, you'll find that GuiClose responds to when you close the app, and GuiSize will run when you resize the app.

 Well there's a lot of autohotkey sites saying that you can apply a transparency and then capture special mouse events to emulate the mouseover and mouseout effects of a button with an image as a background.  I couldn't get any of these working and they looked more confusing then anything else.

My solution is to set up the default button and the image to respond to the ENTER key after you typed something (this is for a search feature) in addition to having a button if the user would rather click then press the ENTER key.  Then create the mouseover and mouseout effects afterwards.

 In this case, I want to display the current month with today highlighted.  As I was trying to get my head round writing this in a program using the qHTM.dll (to include HTML in an autohotkey GUI), the calendar will be in a HTML-autohotkey mixed code.  Obviously just omit the HTML rubbish if you want to create a calendar using just autohotkey syntax.

Actually, the following code is an excerpt from my program which checks an online server (for IT Events during this month) and if it can't download the calendar, it had to display an offline version in the GUI.  To display the following code in this website though, I've had to omit a lot of the HTML part.

Just a quick note for the moment on how to use ternary operators in AutoHotkey.  A ternary operator for those who are unfamiliar with this is an "If...Then...Else..." statement written in a small amount of code, usually on one line, and exists in most programming languages.

For Example, the statement:

 

If (ThisCondition = true)
    ThisVar:=1
Else
    ThisVar:=2

Converted to Ternary this would look like:

ThisVar:=(ThisCondition = true) ? 1 : 2

I'll add as there are a whole bunch of methods using the Ternary Operator in AutoHotkey (discussed on http://www.autohotkey.com/forum/topic29752.html) which I'll put in soon. I just needed something on my site now as I find myself looking for this bit of info every now and again.

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