Detect the number of boxes checked

Let's say I want to detect the number of checkboxes selected in a container, how would you do that exactly? Is there a way to get the properties of the child elements?

This has been me all day stumping. Thank you.

There are many ways to detect the active elements. Why don't you examine them in Javascript? If you know how much check you have in the container boxes, it's the best way I think. You must add each box an id and when of the event triggers (e.g. Press button, navigate forward), you check each property check checkboxes in Javascript, as:

onClicked {
 var checkedNum = 0;
 if (checkBox1.checked) checkedNum++;
 if (checkBox2.checked) checkedNum++;
 if (checkBox3.checked) checkedNum++;
 etc....
}

But if you dynamically create checkboxes, you can get the full list of the QML next to C++ object.

In the projectName.cpp file is a few lines generated automatically:

AbstractPane *root = qml->createRootObject();
// set created root object as a scene
app->setScene(root);

The root object contains all of the QML hierarchy. You can get it with this command:

QObjectList children = root->children();

Thus, the child is a list, and it contains elements of QObject. They may be iterating through a single for the cycle. Every QObject knows its class name, so with this code snippet, you can examine, whether or not the real QObject is a checkbox.

for (int i = 0; i < children.count(); i++)
{
  if (children.at(i)->metaObject()->className() == "CheckBox")
  {
    //do something
  }
}

I hope it helps.

see you soon,

chriske

Tags: BlackBerry Developers

Similar Questions

How to use JavaScript to limit the number of boxes to check the user can select a PDF form?

How to use JavaScript to limit the number of boxes to check the user can select a PDF form?

Here's the working solution

Please rename all the boxes like chkBox0, chkBox1... .chkBox30 (must start with 0)

Value of exports of each checkbox must be "Yes" (default value is Yes)

Place this Code at the level of the Javascript Document

-Code JavaScript document-

var counter = 0; Checked the meter

-Count boxes checked again when the document is closed and reopened.

for (var i = 0; i)<= 30;="">

If (getField("chkBox"_+_i).value == 'Yes') {}

Counter += 1;

}

}

-The function of validation-

function validateCheckBox(name,value) {}

If (value == 'Yes' & meter)<>

Counter += 1;

} else if (value == 'Off') {}

counter = 1;

} else {}

getField ("name") .value = "Off";

App.Alert ("you can select only four checkboxes");

}

}

-End of Document Javascript-

Now put this line in the MouseUp event all checkboxes

Box - Code MouseUp event.

validateCheckBox (event.target.name, event.target.value);

//----------------------------------------------------------------------------------

Hope this will help

Kind regards

Post edited by: Mohammad Irfan

How to detect the number of channels on an oscilloscope?

I have various models sitting around the laboratory, some two-channel, a few four-channel oscilloscope. I would like for my program to be able to detect the number of channels is available.

I can just tell my program how much string is available based on the model number, but is there a VISA command to request scope directly what channels he has? I would also be able to ask what, if any, ability to function math there.

"all drivers of the oscilloscope must return the instrumentID after initialization, and that should be enough to know the number of channels.

What Albert was referring to is that all compatible drivers IVI in their base class interface have an attribute/property that indicates how many channels has the scope.

If you don't want to use the driver of the IVI for the scope then maybe download some of the drivers and check the source code to see how they calculate this dynamic repeated capablity.

How to detect the number of created quickobjects

How to detect the number of quickobjects created? quickobject are quickbox2d.
Basically, I have a timer that will countdown to 4 seconds and it will create a falling ball, it will get removed when she falls down. However, I want only there so that if more than 5 bullets are in step, it will cease to create until it is less than 5 to start creating some balls again. Is there a way I can do?
It's the timer to create the ball
If (! _ballCreation_timer) {}
_ballCreation_timer = new timer (4000);
_ballCreation_timer.addEventListener (TimerEvent.TIMER, _onBallCreationTimer);
}
_ballCreation_timer. Start();
Function which create the ball based on clock
function _onBallCreationTimer (e:TimerEvent): void {}
_doCreateNewBall();
}
function _doCreateNewBall() {}
_ball_quickobject = sim.addCircle ({x: PHYSICS_SCALE * (960), y: PHYSICS_SCALE * (10), RADIUS: 0.5, draggable: false});
MAKE A LIST OF BALLS
_balls_array.push (_ball_quickobject);
}
This is the part where if the table (QuickObject) ball falls down and are destroyed
addEventListener (Event.ENTER_FRAME, _onEnterFrame);
DRAW EACH BALL FALLING OUT OF THE SCREEN
function _onEnterFrame (aEvent: Event): void {}
for each (var quickObject: QuickObject in _balls_array) {}
BALL FALLING OUT OF THE SCREEN?
If (quickObject.y / PHYSICS_SCALE > 1080) {}
_doHandleBallOffScreen (quickObject);
}
}
}
DESTROY THE BALL FALL OFF THE SCREEN IF
function _doHandleBallOffScreen (aQuickObject: QuickObject): void {}
DESTROY THE OBJECT
aQuickObject.destroy ();
REMOVE FROM THE CUSTOM TABLE
_balls_array.splice (_balls_array.indexOf (aQuickObject), 1);
}

check the length of _balls_array. If it is greater than 5, do not create another bullet:

If (! _ballCreation_timer) {}

_ballCreation_timer = new timer (4000);

_ballCreation_timer.addEventListener (IMER TimerEvent.T, _onBallCreationTimer);

}

_ballCreation_timer. Start();

Function which create the ball based on clock

function _onBallCreationTimer (e:TimerEvent): void {}

_doCreateNewBall();

}

function _doCreateNewBall() {}

If (_balls_array.length<>

_ball_quickobject = sim.addCircle ({x: PHYSICS_SCALE * (960), y: PHYSICS_SCALE * (10), RADIUS: 0.5, draggable: false});

MAKE A LIST OF BALLS

_balls_array.push (_ball_quickobject);

}

}

This is the part where if the table (QuickObject) ball falls down and are destroyed

addEventListener (Event.ENTER_FRAME, _onEnterFrame);

DRAW EACH BALL FALLING OUT OF THE SCREEN

function _onEnterFrame (aEvent: Event): void {}

for each (var quickObject: QuickObject in _balls_array) {}

BALL FALLING OUT OF THE SCREEN?

If (quickObject.y / PHYSICS_SCALE > 1080) {}

_doHandleBallOffScreen (quickObject);

}

}

}

DESTROY THE BALL FALL OFF THE SCREEN IF

function _doHandleBallOffScreen (aQuickObject: QuickObject): void {}

DESTROY THE OBJECT

aQuickObject.destroy ();

REMOVE FROM THE CUSTOM TABLE

_balls_array.splice (_balls_array.indexOf (aQuickObject), 1);

}

Data loader detects the NUMBER instead of VARCHAR2

Hello
In my database, I have a table that stores information about components of vehicles. I created a new process identifier as unique keys, fields of manufacturer and reference data loading.
(For example: manufacturer 'BOSCH', '0238845' reference)
When the system is running the data map, it detects the column reference number, delete the first zero character '0238845' -> 238845
How can I solve this problem?
Kind regards

transformation in the data loader to make a character?

Thank you

Tony Miller

Software LuvMuffin

How can I configure the value of box check by default Y tabular
Dear friends,

How can I set the default value of the column in a table.

In collaboration with 4.1.

I created checkboxes in a table, it returns the values are (Y, N). I want to set the default value for Y.

How I can do this.

Thanks and greetings
CORINE.

Published by: Sophie on 26 December 2012 01:54
CORINE wrote:
Dear friends,

How can I set the default value of the column in a table.

One of the examples is described here:
http://dgielis.blogspot.in/2010/08/add-default-to-tabular-form-in-apex.html

In collaboration with 4.1.

I created checkboxes in a table, it returns the values are (Y, N). I want to set the default value for Y.

How I can do this.

This example is specific to the implementation in a table box:
http://www.inside-Oracle-apex.com/checkboxes-in-tabular-forms-the-easy-way/

BTW, you use APEX_ITEM. BOX? If so, can you post your query?

How to limit the number of checkboxes

I use Adobe Pro XI and that you have a form with 15 boxes. I need to be able to limit the total number of boxes allowed to 10, so once they checked 10 boxes, they cannot select all the others in this section. Y at - it a calculation or script anything else that I can use to achieve this?

Here's an approach you can take: How can I limit the number of boxes the user can select? (PDF Forms)

Satellite Pro C660-1NQ does not detect the WLan network

Hi guys,.

We have a Toshiba Satellite Pro C660-1NQ here that does not at all, detect the wireless network
I checked the Device Manager and the wireless card does not show here.

I tried scanning for new hardware, but nothing was found. I tried to turn the wireless off tension with the function and the keys F8 but not yet showing in Manager devices or any new hardware...

Any ideas as to what I can try next?

See you soon,.
Ash

Hello

It seems that the laptop would support the Wlan Atheros 802.11agn card.
Usually the Atheros Wlan card must appear in Device Manager as on the menu network cards.
If it s not appear do not then I recommend that you install the WLAN driver which can be downloaded here:
http://APS2.toshiba-tro.de/WLAN/?page=downloads

Choose the Atheros Wireless LAN Adapter Windows 7 (32/64) 9.2.0.419.0 or newer
I hope this helps to detect the WiFi chip!

Detect the bump online Laser

Hello world

I'm working on a project where I use a laser to detect the number of bumps on the surface. A screenshot of the laser profile is attached. Now I'm running out of ideas, how do I detect if there are bumps two or three.

I tried to use find straight edges, it's giving me some good results, but when I use IMAQ find edge VI in LabVIEW to do this, I'm not able to get something, but the points are identical to the original line.

See all screenshots

Can someone please help me detect and count the number of bumps.

Kind regards.

Shane5ab

Here's an idea:

Use the rake function to find the coordinates of edge first, the high or low (top might work better). Set up a line for these coordinates (elimination of outliers) and subtract the coordinates sent the original coordinates. Simply extract the coordinates Y. Find peaks allows to find bumps and count them. You can also calculate the slope (derivative of 1) or second derivative and locate the bumps with these graphs.

Bruce

Find the number of edges in an image

Hello

I'm working on a project where I need to detect the number of edges in each of particles present in the image.

Can someone please help me with it.

My progress so far, it's that I was able to detect all the edges of the particles in the image successfully using canny edge. However, I'm not able to count the number of edges in the individual particles.

Thank you

Concerning

Aveo

Hello aveo,.

realizing what measures particles after Canny (see the code attached). Use the connectivity 8, what research for all pixels of adjecent if they are part of the same line segment (see the image below):

Manual or Vision Concepts:

"With connectivity-4, two pixels are considered part of the particle, even if they are adjacent horizontally or vertically." Connectivity-8, two pixels are considered part of the particle, even if they are horizontally, vertically, or diagonally adjacent. The following figure shows the two types of connectivity. »

Best regards

K

Get the letters when I type the number of

Original title: numeric keys

why I get letters that appear on the screen when I press the number keys

Hello

1. what operating system do you use?

2 did you change on your computer?

3. what application you use to type?

4 are you facing issue while typing online?

If you use windows7, I suggest you follow the link and check.

I suggest you to check in safe mode and perform the clean boot and check.

Step 1:

Advanced, including safe mode startup options

http://Windows.Microsoft.com/en-us/Windows7/advanced-startup-options-including-safe-mode

Step 2:

How to troubleshoot a problem by performing a clean boot in Windows Vista or in Windows 7

http://support.Microsoft.com/kb/929135

Note: After a repair, be sure to set the computer to start as usual as mentioned in step 7 in the above article.

I also suggest you check for computer\Keyboard manufacturer.

I also suggest to activate / deactivate the number pad emulation, check the documentation that came with the computer.

In addition, add toggle button F-lock (locking function).

vISTA can NOT DETECT THE READER of CD/DVD,

WINDOWS VISTA cannot DETECT THE CD PLAYER, ONCE CHECK IN DEVICE MANAGER, the PROPERTIES THE SHOWS "Windows cannot load the driver for this hardware device. The driver may be corrupted or missing. (Code 39) ». How can I get the DIFFICULTY of THIS PROBLEM?

Thank you

Hello

Code 39 means that the driver is corrupted or missing.

Step 1: Please do all the same underneath if you did some before as is often total
a process that solves the problem.

Try this - Panel - Device Manager - CD/DVD - double click on the device - driver tab.
Click on update drivers (this will probably do nothing) - RIGHT click ON the drive - uninstall.
RESTART this will refresh the default driver stack. Even if the reader does not appear to continue
below.

Then, work your way through these - don't forget the drive might be bad, could be a coward
cable or slight corrosion on the contacts (usually for a laptop) and other issues.

Your CD or DVD drive is missing or is not recognized by Windows or other programs
http://support.microsoft.com/kb/314060 - a Mr Fixit

Try this fix manually if the Fixit 314060 does not work
http://www.pchell.com/hardware/cd_drive_error_code_39.shtml

Your CD or DVD drive is missing or is not recognized by Windows or other programs-
a Mr Fixit
http://support.Microsoft.com/kb/982116

The CD drive or the DVD drive does not work as expected on a computer that you upgraded to
for Windows Vista
http://support.Microsoft.com/kb/929461

When you insert a CD or a DVD, Windows Vista may not recognize the disc
http://support.Microsoft.com/kb/939052

Your CD or DVD drive cannot read or write media - A Mr Fixit
http://support.Microsoft.com/GP/cd_dvd_drive_problems

CD/DVD drive does not appear in Windows Vista, or you receive this error in Windows
Vista installation after booting from the DVD (AHCI)
http://support.Microsoft.com/kb/952951
Drive CD - R or CD - RW Drive is not recognized as a recordable device
http://support.Microsoft.com/kb/316529/

Hardware devices not detected or not working - A Mr Fixit
http://support.Microsoft.com/GP/hardware_device_problems

Another possibility is that the cables are loose. Remove ALL power, then make sure that the cables in both
ends. Remove and replace, do not just tight. For laptops, you can often clean power and
contacts data with a pencil eraser.

Some DVD players do not use the Windows default drivers so check with the manufacturer of system and
manufacturer of device to see if there is a firmware or drivers for your drive if necessary.

===============================

Step 2: You have disc problems as the CD/DVD is actually 4 discs in 1 case (CD & DVD
Burn and CD and DVD read). So it is not unusual for 1 or 2 operational so that other parts
do it right.

Did you follow the Troubleshooting Guide for the reader who still does not work? There are
the entries in registry that the troubleshooter does not solve and those who "might" be the cause.

Check with your Maker system and a device for the two possible firmware updates and
the correct registry entries for your car.

Here are the keys that I of course are those in question - for the subkeys of the CD/DVD drive
as there will be other subkeys in these keys. Do not forget to ask specific keys involved as well as
the parameters.

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\IDE

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Hardware Profiles\0001\System\CurrentControlSet\Enum\IDE

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\ {4D36E965-E325-11CE-BFC1-08002BE10318}

-----------------------------------------------------------------------

You can probably find more info here and maybe even the exact registry for your CD/DVD settings
drive from someone with the same model.

Forums - a lot of expert real help
http://Club.myce.com/

CD/DVD units
http://www.myce.com/storage/

Use DevManView to locate the CD/DVD in the registry (be careful and do a prior Restore Point)
nothing change) - find the DevManView device and then make a right click on it free in RegEdit.

DevManView - free - an alternative to the standard Windows Device Manager, which displays all the
devices and their properties in flat table, instead of the tree viewer
http://www.NirSoft.NET/utils/device_manager_view.html

I hope this helps.

Rob Brown - MS MVP - Windows Desktop Experience: Bike - Mark Twain said it right.

the number of files selected (check box)

I just restored my vista 64 for the original configuration.
before when I was in a file and checked the boxes-cabinets, I had an account of how many files have been selected... I can't find how to display once again. It is a great help

In Windows Explorer, go to tools, and the status bar is checked. That's where this information is displayed.

I hope thi helps.

Good luck!

Lorien - MCSA/MCSE/network + / has + - if this post solves your problem, please click the 'Mark as answer' or 'Useful' button at the top of this message. Marking a post as answer, or relatively useful, you help others find the answer more quickly.

How to check the version of windows and the number of bits?

Dear Sir

As I could not download and watch a video show, I was told to check the version of windows and the number of bits. I remembered the upgrade to version 10 of Windows when you are prompted before. However, when I clicked on 'This PC' to check the C:\ drive, it shows Windows8_OS (C :). It is quite misleading. Can I know how to check & confirm the correct version of Windows and where to find the number of bits as well?

Thank you.

Looks like you're on windows 10, but after the upgrade is not changed the label of the hard drive.

Type winver in the run box-press windows key + R box simultaneously.

If the Windows 10 Build 10XXX State, you're on windows 10.

Simply right click C: / and select Rename and rename the drive in Windows10OS or what you want.

As far as the pieces is concerned, the PC this right click > properties and see the following line:

Increase the number in the option box

Using jdeveloper 11.1.2.4.
I have a table that has the following attributes
Qusetion - out of text box
Yes – Select one radio has only a single value yes
None - Select a radio is not only a single value of
I dragged and dropped the table as an af:table when my user clicks on the radio button yes I want a county to increase
My scenario:
[Keywords RB - Radio button O/P TB - exit TextBox]
Question yes no
Question 1 RB RB
Question 2 RB RB
Issue N RB RB
Number of selected Yes TB O/P
The O/P TB, I need to display the number of Yes selected.
Any help would be appreciated.

KT

I asked about variable, how you have defined it in the bean?

Assume that the initial value is - int i = 0;

now on the change in value when you increase its value to 1, check this second when VCE ius called what is the initial value of i

because in the case of the scope of the request, the variable is initialized every time while it was possible that it returns 1 whenever

but in the case of view range, it should work fine

Share of the variable code and rebuild your project and run again

Since my previous commnet.

You can take a variable at the bean and create its getter and setter and on option button valuechange event increase and decrease its value

You must write the code to increase or decrease the value of i according to your selection

Ashish

Detect the number of boxes checked

Similar Questions

Maybe you are looking for