Show.- Displays the typical MessageBox with a checkbox at the bottom.

Show: [Title] [flags] [Body] [Check_Text]
Title : Caption of the MB.
flags: integer to display icon and buttons for the MB, for example: 35 = MB_YESNOCANCEL|MB_ICONQUESTION. (See bottom)
Body: the text of the MB.
Check_Text: The caption for the check box.
returns: $0 the ID of the button; $1 1=checkec 0=uncheked.

Button/Icon None Error Question Warning Information
OK 0 16 32 48 64
OK & Cancel 1 17 33 49 65
Abort & Retry & Ignore 2 18 34 50 66
Yes & No & Cancel 3 19 35 51 67
Yes & No 4 20 36 52 68
Retry & Cancel 5 21 37 53 69

Botton Value
OK 1
Cancel 2
Abort 3
Retry 4
Ignore 5
Yes 6
No 7

If you'd like to add some parameters more, such default buttons & help button:
Default #1 0
Default #2 256
Default #3 512
Default #4 769
Add Help button 16384

Example: If you like to have a MessageBox with Yes & No buttons, the Information icon & button "No" as default, let's do the math:
Yes & No + Icon information = 68.
2nd button as default = 256.
Sum = 256+68 = 324.
flags = 324.