Sign in to follow this  
Followers 0
StringingLong

_WinAPI_GetWindowLong Runtime Error

4 posts in this topic

#1 ·  Posted (edited)

Experiencing a run time error when running _WinAPI_GetWindowLong(). I've narrowed down my code to this code splice.

#include <WinAPI.au3>
#include <GUIConstantsEx.au3>
#include <WinAPI.au3>
#include <WindowsConstants.au3>

$hWndMain = GUICreate("Test",@DesktopWidth,@DesktopHeight,0,0,$WS_OVERLAPPEDWINDOW+$WS_VISIBLE+$WS_CLIPSIBLINGS+$WS_CLIPCHILDREN)

; Error at this line "Variable used without being declared"
$wstyle = _WinAPI_GetWindowLong($hWndMain, $GWL_STYLE)

GUISetState(@SW_SHOWMAXIMIZED)

while(1)
$msg = GUIGetMsg(1)
Switch $msg[0]
case $GUI_EVENT_CLOSE
ExitLoop
EndSwitch
WEnd

When I run this, I get a run time error:

"Variable used without being declared"

Edited by StringingLong

Share this post


Link to post
Share on other sites



You just need to include Constants.au3


When the words fail... music speaks

Share this post


Link to post
Share on other sites

#3 ·  Posted (edited)

Thanks Andreik. Yes, I just figured this out after looking at the source UDF. This puzzled me because after compiling and building, it did not catch the missing symbol.

It wasn't until after program execution that this error came up. Shouldn't constants be resolved at compile time?

This was a devil of a bug to track down because it was a run time program crash with no error messages.

Edited by StringingLong

Share this post


Link to post
Share on other sites

StringingLong,

If you compile from within SciTE4AutoIt3, the Au3Check run will catch it. If you run Aut2Exe directly it will compile normally as $GWL_STYLE is "just another variable". :)

It really is worth downloading and using the enhanced version rather than the "SciTE-lite" which you get with the standard Autoit install. ;)

M23


Any of my own code posted anywhere on the forum is available for use by others without any restriction of any kind._______My UDFs:

Spoiler

ArrayMultiColSort ---- Sort arrays on multiple columns
ChooseFileFolder ---- Single and multiple selections from specified path treeview listing
Date_Time_Convert -- Easily convert date/time formats, including the language used
ExtMsgBox --------- A highly customisable replacement for MsgBox
GUIExtender -------- Extend and retract multiple sections within a GUI
GUIFrame ---------- Subdivide GUIs into many adjustable frames
GUIListViewEx ------- Insert, delete, move, drag, sort, edit and colour ListView items
GUITreeViewEx ------ Check/clear parent and child checkboxes in a TreeView
Marquee ----------- Scrolling tickertape GUIs
NoFocusLines ------- Remove the dotted focus lines from buttons, sliders, radios and checkboxes
Notify ------------- Small notifications on the edge of the display
Scrollbars ----------Automatically sized scrollbars with a single command
StringSize ---------- Automatically size controls to fit text
Toast -------------- Small GUIs which pop out of the notification area

 

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0