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OrbWorks Community Forum • View topic - Text Positioning?
Page 1 of 1

PostPosted: Thu Sep 20, 2001 8:07 pm
by jornada
Are there any functions or messages for text-positioning? I am trying to find the index of where the cursor is, in a text box.


Justin

Javaoptic.com

PostPosted: Fri Sep 21, 2001 8:55 am
by guy
You can do this by using the sendmsg() function with a suitable message number.

Try:

#define EDIT_CTL_ID 300 // Or whatever control ID you used

iPos = sendmsg(EDIT_CTL_ID, EM_GETSEL, 0, 0) ;

iStart = iPos & 0xffff ;
iEnd = (iPos >> 16) & 0xffff ;

This returns the start and end positions of the current selection range. I think it may return the cursor position in the start value if nothing is selected.


Guy
http://www.networkdynamics.net/PCForm.html

PostPosted: Fri Sep 21, 2001 5:19 pm
by jornada
Thanks it worked. =)

For anyone else who wants to use this and return the position, divide the position by 65537.

iPos = sendmsg(EDIT_CTL_ID, EM_GETSEL, 0, 0) ;
ipos = ipos / 65537

Justin

Javaoptic.com

PostPosted: Fri Sep 21, 2001 5:20 pm
by jornada
my mistake

iPos = sendmsg(EDIT_CTL_ID, EM_GETSEL, 0, 0) ;
ipos = ipos / 65537;


forgot (;)

Justin

Javaoptic.com

PostPosted: Sat Sep 22, 2001 1:29 pm
by guy
If you want the value in the high word of the returned result then you should divide by 65536, not 65537. It's easier and faster to do it the way that I suggested:

ipos = (ipos >> 16) &0xffff ;

That is, shift the value right by 16 bits and mask off the low word.




Guy
http://www.networkdynamics.net/PCForm.html

PostPosted: Wed Feb 16, 2005 9:47 am
by dima_matrix
I'm sorry, but anybody have a problem with using EM_GETSEL on PocketPC 2003-platform? I obtained zero returned by SendMessage and wParam and lParam did not changed in any case. Is this normal?