rotating text

[mhs100]

Hi all,

I want to continuously move text in a string control like this during my entire program execution

"This is a text box."

"his is a text box T"

"is is a text box Th"

"s is a text box Thi"

" is a text box This"

" s a text box This i"

" a text box This is "

 I think timer will also be used to make the moving text visible. Can anyone show me how to do this?

 Any help will be greatly appreciated.

Regards,

mhs100

[RobertoBozzolo · Accepted solution]

The idea of the timer is good for this; to rotate text you can use something along this line in the timer callback (not tested: I haven't CVI installed on this machine):

char    ch, string[512];

GetCtrlVal (panelH, controlID, string);

ch = string[0];

StringCopyMax (string, string + 1, strlen (string) - 1);

string[strlen (string) - 2] = ch;

SetCtrlVal (panelH, controlID, string);

I am using StringCopyMax because it is tolerant of overlaps on source and target string so I have no need to use an intermediate string to manipulate the text.

[jared]

Check out the example program in samples\apps\marquee.

It uses a child panel with a text message control and moves the text message control to the left on EVENT_IDLE. Instead of using EVENT_IDLE, you can use a timer control.

Hope this helps.

- jared