[Openroad-users] FW: BringtoFront issue on an OR frame

[Eric Mischke]

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From: Pat Weinman [mailto:pat.weinman at pateric.com] 
Sent: Wednesday, November 22, 2006 4:34 PM
To: 'Eric Mischke'
Subject: FW: [Openroad-users] BringtoFront issue on an OR frame


Not sure if this made it to the mailing list.  Please forward...  

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From: Pat Weinman [mailto:pat.weinman at pateric.com] 
Sent: Wednesday, November 22, 2006 4:21 PM
To: 'openroad-users-bounces at peerlessit.com'
Subject: RE: [Openroad-users] BringtoFront issue on an OR frame


Hi Jay,
 
We were experiencing a similar problem between two OpenROAD applications on
the Windows platform (works okay on Unix clients with a simple
BringToFront).  It took a while and with support from Ingres Corp we just
came up with a solution today.
 
What was happening...the sending OR application would issue an external
event to the receiving OR application.  The receiving application would then
try the BringToFront method which didn't work.  
 
To fix the problem we used a combination of external events and Win32 calls
(user32.dll) .  When the receiving application is started it sends an
external event to the sending application with the CurFrame.WidgetID
information.  The CurFrame.WidgetID is set after the frame is displayed so
we send the external event outside of the initialize block.  
 
Since the Sending application now knows the WidgetID of the receiving
application it can set the receiving application to the Foreground window
using the windows api 'SetForegroundWindow (&hwd)' where &hwd is the
receiving application's Curframe.WidgetID.  One important thing to note is
that when the SetForegroundWindow is issued from the sending application it
must be in the foreground.  Only the foreground process can set a new
foreground process.  An excerpt from the sending application is shown below:
 
In Sending application create two 3gl Procedure components with Return Value
'none'.  These appear to be case sensitive.
ShowWindow   < This is needed if the receiving application is iconified.
SetForegroundWindow  < This brings window to front.
 
Link 3gl components to c:\windows\system32\user32.dll by using the 'Browse'
button or setting II_LIBU3GL to include c:\windows\system32\user32.dll.
 
In the sending application issue the following two lines before sending the
external event to the receiving application:
CALLPROC ShowWindow(xxx, 1);
CALLPROC SetForegroundWindow(xxx)
 
where xxx is the CurFrame.WidgetID of the sending application.
 
This should bring the receiving application frame to the foreground.  
 
 -Pat

 
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From: openroad-users-bounces at peerlessit.com
[mailto:openroad-users-bounces at peerlessit.com] On Behalf Of Mehta, Jay
Sent: Tuesday, November 21, 2006 7:26 AM
To: openroad-users at peerlessit.com
Subject: [Openroad-users] BringtoFront issue on an OR frame



Hi all, 

We've been facing some issues with the BringtoFront functionality,
specifically in the context of an OR userevent that is indirectly triggered
by an action on a VB .Net form. The event is raised and directed to the
receiving OR frame by an intermediate agent, and the code to then bring that
frame to the front is executed as expected (all this verified by running the
application through the debugger). However, the .Net form that originally
triggered the whole sequence of events still seems to sit on top of the
receiving OR frame. We've even tried using a 3GL call to the SetWindowPos
function, to change the order of the top-level window, but to no avail. 

Currently using OR 4.1/0302 (int.w32/00), Patch 9409 on Windows XP SP1. Any
help would be much appreciated. 

Thanks in advance, 
Jay 

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