Label does not resize on splitter

[ISITEC_RIEPER]

Hi,

i attached some different controls (text box, picture) to a vertical splitter. The attachment mode is "splitter sizes control".

When i resize the panel, the control is sized as expected, but the label of the controls are not resized. 

F.e. if the original width is 300 points and the new width of the control is 500 points, the label still has a widt of 300 points.

I know, that i can do a workaround a resize the label by myself in code, but i think it's a bug on splitter behavior?

CVI 2013 SP1, Full Development System

Thanks for any comment

Norbert Rieper

[ADagli]

Hi Norbert,

is it possible, that you have set absolute values for the control elements?

Best regards,

[ISITEC_RIEPER]

Hi Abduelkerim,

no, i don't think so. I just added the control to my panel by create >> text box.

Then i opend arrange >> control coordinates and adjusted label top, left and width so that the label is aligned to the left and directly on top of the control. The width is the same as control widt.

Then i attached the control to the vsplitter. The strange behavior is, that the control is sized , but the label not.

Thanks for trying to help

Norbert

[ADagli]

Can you upload your file please so we can have some tests?

[ISITEC_RIEPER]

Hi Abduelkerim,

i reduced the project almost to the size problem and attached the files to this post.

We are talking about the two text box controls WORK_DIR and REMARK.

I put a define in the startup.c to exclude my workaround.

Norbert

[ADagli]

Hi Norbert,

it seems, that your control is not attached to the splitter, so there is no automatic resizing of this element, when you change the size of your window.

I my opinnion, should have to programatically add your control in the splitter.

The function therefore is described in this document:

http://zone.ni.com/reference/en-XX/help/370051V-01/cvi/uiref/cviaddctrltosplitter/

Please let me know if this works.

[ISITEC_RIEPER]

Hi Abduelkerim,

the control is added to the splitter. I can see that the control itself resizes, but the related label doesn't.

Anyway, i tried your suggestion and added:

AddCtrlToSplitter(panelHandle, PANEL_VSPLITTER, VAL_LEFT_ANCHOR, PANEL_WORK_DIR, 0, 0);
AddCtrlToSplitter(panelHandle, PANEL_VSPLITTER, VAL_LEFT_ANCHOR, PANEL_REMARK, 0, 0);

When i run the program i get a NON-FATAL-RUNTIME ERROR,  ......item is already attached to the splitter , for each of the both mentioned controls.

So i added the following lines to first remove the controls from the splitter:

RemoveCtrlFromSplitter (panelHandle, PANEL_VSPLITTER, PANEL_WORK_DIR);
RemoveCtrlFromSplitter (panelHandle, PANEL_VSPLITTER, PANEL_REMARK);

AddCtrlToSplitter(panelHandle, PANEL_VSPLITTER, VAL_LEFT_ANCHOR, PANEL_WORK_DIR, 0, 0);
AddCtrlToSplitter(panelHandle, PANEL_VSPLITTER, VAL_LEFT_ANCHOR, PANEL_REMARK, 0, 0);

Whe n i than run the program, i do not get a runtime error but the automatic resizing still doesn't work for the label.

I attach a screenshot of the panel at start and after resize.

So i still think it's a bug.

[ADagli]

Hi Norbert,

i'll discuss that with our specialist and R&D Team and come back to you alright?

Best regards,

[LuisG]

Hello Norbert,

Splitters are not expected to size the label of the attached controls. The sizing that a splitter does to an attached control is equivalent to what happens when you explicitly size the control by setting its ATTR_WIDTH or ATTR_HEIGHT attributes. Setting these attributes also does not affect the size of the control's label. You can also verify this by simply sizing some random control with a label in the User Interface Editor.

To size both the control and the label you'd have to remove the label completely, and replace it with a text message control (which looks just like a label). You could then attach both controls to the splitter and the splitter will size them both.

Luis

[ISITEC_RIEPER]

Hello Luis,

thanks for your reply.

Ok, i think it makes sense to leave the label unchanged on resize, because sometimes the user whants to keep the label small.First i thought it's a bug, but now i know it's a feature 😉

I think to use a text message is the best way. I helped my self by resizing the label programmatically on EVENT_PANEL_RESIZE (after resizing panel and controls):

GetCtrlAttribute(panelHandle, PANEL_REMARK, ATTR_LEFT, &left);
GetCtrlAttribute(panelHandle, PANEL_REMARK, ATTR_WIDTH, &width);
SetCtrlAttribute (panelHandle, PANEL_REMARK, ATTR_LABEL_LEFT, left);
SetCtrlAttribute (panelHandle, PANEL_REMARK, ATTR_LABEL_WIDTH, width);

Thanks for yuor help.

Norbert