how to convert handle value to string?

[elmo]

I create ComboBox:



.data?
hCombo1     dd ?

.code:
invoke CreateWindowEx,blablablabla.......
mov hCombo1,eax




Now, I want to display hCombo1 in the TextBox or I want to convert hCombo1 to string..
How it's code? Thank you.
Fritz Gamaliel

[Farabi]

invoke dw2a,hCombo1, addr buff ;  << Now buff contain the string of the handle on decimal.