I am running a VI with a calibration part that is currently executing once at the start of the program. To control it instead by an OK button on the front panel, I replaced the case structure by an event structure. However, the VI now shows an error saying that the array I am converting to a variant is not initialized when I click on the OK button. Any hints?
The false case just outputs an array made of the two single elements in the input
Related
I know how to write a VBA macro in Microstation that will ask the user to select an element:
Sub Create2DCrossLines()
' Set error handler
On Error GoTo ErrorHandler
' Let the user select the bank elements himself
Call CommandState.StartLocate(New clsSelectBanksLCE)
Exit Sub
ErrorHandler:
Call ReportError("Create2dCrossLines")
End Sub
clsSelectBanksLCE uses ILocateCommandEvents for managing that part of the logic. So the user can select a LineElement for example and when the Accept event is fired it runs an action:
Private Sub ILocateCommandEvents_Accept(ByVal Element As Element, _
Point As Point3d, _
ByVal View As View)
In my particular case we track selecting element 1 and then element 2 and once both elements are selected it proceeds. This is all fine.
My problem is this: after I accept the first element, and before proceeding to select the next (ie: in the Accept handler) I want to get the user to snap on to two vertices of the line element.
I need to know which part of the line element they want to process. I can't work out how to do this. In AutoCAD you can use GetPoint.
So I want to ask them to snap on to the first vertex on this line element, then snap onto the end vertex. After this can we move on to select the second element.
Update
I have just stumbled over this article. I notice it says:
Once the user has accepted an element, we should start another class that implements IPrimitiveCommandEvents to obtain a target datapoint. Finally, compute the offset from the supplied locate datapoint to the target datapoint and move the element.
It seems what I want but I just am not clear on the right order. At the moment I have:
ILocateCommandEvents_Start This begins the location process.
ILocateCommandEvents_LocateFilter. If the element is a LineElement, then it
assigns m_Element1 and the second event fired assigns m_Element2.
ILocateCommandEvents_Accept If both the variables are not nothing it runs the main process.
See my dilemma? It sounds like I need to:
Run one instance of ILocateCommandEvents to select one element only.
Then run one instance of IPrimitiveCommandEvents to get the first snap point.
Then run another instance of IPrimitiveCommandEvents to get the second snap point.
Then run another instance of ILocateCommandEvents to get the second element.
Finally, once the second element is accepted, perform my processing.
That is how I understand I need to do it. Or, can I use my one ILocateCommandEvents class that currently gets the user to choose two elements?
Guidance appreciated.
Update
I got it to work by following the above logic. That article really helped. The only issue I have now is that I need to draw a rubber band. But that is a separate question.
As mentioned in this article:
Once the user has accepted an element, we should start another class that implements IPrimitiveCommandEvents to obtain a target datapoint. Finally, compute the offset from the supplied locate datapoint to the target datapoint and move the element.
The link also provides example code on how to use the IPrimitiveCommandEvents event class.
I am using the .isPressedIn() function see if the mouse click is in a target shape. However, whenever you click on the target shape, it will say the response is incorrect. However, whenever you hold the mouse button down in the target shape, it will say the mouse was clicked on the target. I'm not sure how to fix the mouse button release. I tried using CustomMouse, but I am unable to get that to click inside a shape (unless I am mistaken). Any suggestions would be greatly appreciated.
Thanks!
stimDuration = 5 #stimuli are on the screen for 5 seconds
potential_target = [shape1, shape2, shape3] #shapes that may be a target
target = random.sample(potential_target, 1) #randomly select a target
myMouse = event.Mouse() #define mouse
if clock.getTime() >= stimDuration
ResponsePrompt.draw() #message to indicate to participant to select target
win.flip()
core.wait(2)
if myMouse.isPressedIn(target[0]):
print "correct"
else:
print "incorrect"
The problem is that the line myMouse.isPressedIn(target[0]) checks the state of the mouse exactly when that line is run. Since it is preceeded by a core.wait(2) it does not react to mouse clicks in those two seconds and consequently only collects the mouse response of you still hold it down after two seconds.
I would instead have a tight loop around the myMouse.isPressedIn which runs thousands of times per second. So skipping your first lines:
ResponsePrompt.draw() # message to indicate to participant to select target
win.flip() # show that message
while True: # keep looping. We will break this loop on a mouse press
if myMouse.isPressedIn(target[0]): # check if click is within shape
print "correct"
break # break loop if this condition was met
elif myMouse.getPressed(): # check if there was any mouse press at all, no matter location
print "incorrect"
break # break while loop if this condition was met
In that code, you are using the expression if myMouse.isPressedIn(target[0]), but are only evaluating that expression after some time has elapsed (stimDuration). This means that isPressedIn() will be typically be evaluated well after the actual click happened. At that point, the mouse may no longer be within target[0], or may not longer be being pressed down by the subject. So I think what you are seeing is the correct (expected) behavior.
So to obtain the behavior that you want, you need to do keep track of whether then mouse was pressed in the shape on every frame.
Also, I am not sure how you are using the code you posted. Some looks appropriate for every frame, but some looks like it should be run only once (Begin routine). You might want to review that--things should not be initialized every frame (like target or myMouse).
I've started using QTP last weekend so I'm still a bit confused about some things.
I've coded a function that opens an URL on IE, performs some actions and writes a report. But I have a little problem: at a certain point the function has to click on a button to go on but this button's value is changed at every refresh of the page.
For example: at the first access the button's value (or label) is "Results List (51)" but, if I refresh the page, the value becomes "Results List (11)".
What changes is the number inside the brackets (that identifies the number of results inside the list).
Obviously I recorded the action only one time and the result is this:
Browser("myBrowser").Page("myPage").Frame("myFrame").WebButton("Results List 51)").Click
How can I click on the button without having to worry about it's value?
You should open the object repository and have a look at the description that was create for your WebButton then make the property in question a regular expression.
In your case the value should be Results List \(\d+\), this means Result List followed by open-parentheses, followd by one or more digits (a number) followed by close-parentheses.
Here's an explanation on how to use regular expressions in UFT.
This question reminded me of the days when I was a beginner in QTP ;) I think I still am!
Coming to your question -
If you don't really care about what is inside the brackets then you can just give Results List*.* but if you want to check if there is a bracket and digits within it then use the value suggested by Motti i.e. Results List (\d+)
Detailed Steps as you are a rookie:
1) Go to Resources->Object Repository
OR
In the Resources pane expand your action and double-Click the local object repository (You recorded hence the objects will be in local)
2) Click on the Concerned Object so that the object properties specific to this object is displayed.
3) Select the property (name?), at the extreme right you will see a button to configure the value, click on it.
4) Type the text Results List (\d+) or Results List*.*, select the checkbox for regular expressions.
5) A message box will appear, Click on No and then OK button.
Your script should run now!
I am a student programmer who is learning VB. I am trying to make a telephone book type project in VB (Windows Forms). In my project I am using an unbound Data Grid View control. Below the Data Grid View, I have some textboxes which will display the values of the selected row. On the form load event, my program accesses a file and populates the Data Grid View control with values from the file. This works perfectly, but the problem I get is when I use the code:
txtLast.Text = dgvMain.Rows.Item(0).Cells(0).Value
to populate the textbox called txtLast with the value at the specified cell, the textbox doesn't display the value. The program doesn't crash or hang, it simply won't display the value and when I try to edit the textbox, it acts as if the textbox is empty. I have tried using
txtLast.Text = dgvMain.Rows.Item(0).Cells(0).Value.ToString()
as well as trying to refresh my Data Grid View control and the textbox. Nothing has worked so far. When I use a breakpoint to see whether that line of code is executed, the autos window shows me that the line of code is executed and that it sees the value of the specified cell as "Smith". However, when I press F11 to step into the next line, the textbox.text property remains as "" instead of changing to "Smith".
Note: when I manually specify the text through the code (i.e. txtLast.Text = "Test") it will show that text. Also, this problem is not with just one textbox, it is with every textbox that I use (I have 5 textboxes showing various values from the specified row). The weird thing is that out of the 5 textboxes, one of them, the masked textbox which shows the phone number works perfectly with the same line of code. (note it is not a problem only affecting regular textboxes as I have tried using both regular textboxes and masked textboxes, both produce the same problem except for the phone textbox).
Also, I would prefer to keep the Data grid view unbound (not connected to a database) and the textboxes unbound (not connected to the data grid view as a data source) because while browsing the internet I have seen people suggesting to bind the textbox or data grid view, however I do not understand how to do so, and I believe that this can be done without binding to a data source.
Any help is appreciated in trying to figure out why the text doesn't change. Let me know if you need any other info or if part of my explanation is unclear.
Thanks!
I have a form with a few buttons which execute code when pressed like running validations on the database.
Some code can run for a few minutes so is there any way to show the time remaining or a message to display the % of process completed?
Or pop out a message when code evaluation starts and the message should disappear once code running is completed?
What you are probably looking for is a "Progress Bar".
I've used the Microsoft ProgressBar control (you can find it under Insert->ActiveX Control), and it's not that hard to use. Just set the value of it to a percentage (as an integer, not a decimal).
'foo, being the ProgressBar
me.foo = 70 '70%
There is some good info here on another method: http://www.granite.ab.ca/access/progressbar.htm
In order to do this the "normal" way, you'd need to run your validation in another thread and have it report its progress back to the UI thread. However, I don't believe VBA supports any kind of multithreading.
If your validation routines involve a loop, or even just many separate discrete operations, you can try inserting a DoEvents statement in between loop iterations (or operations), and then have your progress display updated periodically (say, in an Application_OnTime event handler).
I usually have a form I name frmProgress or whatever, with a cancel button and a label for displaying a status message. Then embedded in the form code I have a boolean called bCancel, and when you hit the cancel button it simply sets bCancel as true.
Also in this code I have a routine called ShowPercDone( Idx , NumIdc ) where Idx is the step the code is on, and NumIdc is the number of steps the code will take (assuming each step takes the same amount of time). This works well when I'm running through a for loop, but basically any time I want to display a status update I just call the routine in the form with my message, which I should add runs the doevents command for me.
So that's how the status form works. In the macro I run, I start out by just calling frmProgress.show (0) so that it lets you click the cancel button. Then in my loop when I update the status message I then check frmProgress.bCancel and if it's true I exit out of the macro.
Hope that helps.
Finally to be simple i decided to use the method given here
http://oreilly.com/pub/h/3330#code