QlineEdit with constant text and editable text fields

Embitel_qt

I have a requirement to have a line edit which has a custom text which is non editable and another field where user can enter new text.
Please refer the attached image. custom line edit

| Image_<COUNTER> |

In that image we can see that the "<COUNTER>" part should be non editable and should always be at the last position. And "Image_" is an editable text where user can enter any text.

Is there any way to have a custom LineEdit like this.

mrjj

hi
Its not an option just to use a QLabel and LineEdit together?

try this test and tell me if its not very close to what you want?
https://www.dropbox.com/s/cucmap61i8cyqdc/fixedtext.zip?dl=0

Embitel_qt

Thanks a lot for the example.

But this solution using QLabel & QLineEdit will not suit my usecase.
The content text of this LineEdit will be used as file name after replacing placeholder <COUNTER> with values from 0..N.

mrjj

@Embitel_qt
Hi can I ask what is wrong with it ?
Just to understand.
It would be easy to create function to return a QString containing
edit + Label text.

Embitel_qt

This above mentioned is only one use case. The actual functionality of my LineEdit will contain multiple placeholder fields like <DATE>, <TIME>, etc... which can be added to the LineEdit on the current cursor position.

So its not an option to use combination of QLineEdit & QLabel.

RobertoDuran

@Embitel_qt Will hiding the "<COUNTER>" piece of text in the code and having only a LineEdit be satisfactory? I mean storing QLineEdit as a string and adding <COUNTER> to it in code.

mrjj

@Embitel_qt
ah, so <X> can appear anywhere in the text
and after insertion, should not be editable?
So you need to support all cases of
<X>aaaaa
aaaa<X>aaaa
aaaa<X>

SGaist

Hi,

To add to @mrjj do you mean something like Qt Creator's Default build directory settings in Build & Run -> General ?

Embitel_qt

@mrjj yes you are correct <X> can be added at any position in one usecase.

In my first use case [mode one] there will be only <COUNTER> and this should be always at the end of the LineEdit and which should not be edited. But the user can insert new characters before <COUNTER>

In my second use case[mode two] there can be any place holder[<CONTER>, <DATE>, <TIME>, etc...] all this can be editable[no restrictions] and user can insert new characters anywhere in the LineEdit.

Hamed.Masafi

lineEdit->setInputMask("Im\\age\\_0000");

Embitel_qt

Thnaks for the inputs.
Now I have found a way to make my <COUNTER> non editable using the mask

lineEdit->setInputMask("xxxx\<\C\O\U\N\T\E\R\>");

Now thw problem is I am able to enter only 4 characters before <COUNTER> but i want to allow the user to enter maximum of 91 charcters.

What should I modify on the reg expression to achieve this?

RobertoDuran

@Embitel_qt Could you not just use 91 "x"s?

lineEdit->setInputMask("xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx1<\C\O\U\N\T\E\R>");

mrjj

might be slightly more compact to use the fill method. :)

http://doc.qt.io/qt-5/qstring.html#fill