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migel: why can't he create CListBox derive class and manipulate the key down in windowProc?
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migel: why can't he create CListBox derive class and manipulate the key down in windowProc?

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Thanks migel.... With that article and a li'l bit of trial codes I was able to acheive this. The right direction is what I needed. Thanks again.<br />
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PS: I searched on this &quot;Subclass AND ComboBox&quot; and I cant believe I missed this topic in that whole list. 
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Thanks migel.... With that article and a li'l bit of trial codes I was able to acheive this. The right direction is what I needed. Thanks again.

PS: I searched on this "Subclass AND ComboBox" and I cant believe I missed this topic in that whole list.

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My requirement ins simple .. but I just dunno how to get this done. All I need is a Mask Combo Box. ie. I have a DropDownList (style) combo box. So I let users select from its list or type a value. But I want to restrict a few characters from getting typed. <br />
I thought of having my MaskCombo class overriding PreTranslateMessage. I can trap the key and if it is one of the restricted chars I can return ZERO. But since I need only a few valid chars., I'd have to put in a whole lot of things to restrict. I dont want to do this. <br />
Let me put this in simpler words. How do I restrict the user input to just Numbers, &quot;-&quot; and A to Z (Caps) ONLY !
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My requirement ins simple .. but I just dunno how to get this done. All I need is a Mask Combo Box. ie. I have a DropDownList (style) combo box. So I let users select from its list or type a value. But I want to restrict a few characters from getting typed. 
I thought of having my MaskCombo class overriding PreTranslateMessage. I can trap the key and if it is one of the restricted chars I can return ZERO. But since I need only a few valid chars., I'd have to put in a whole lot of things to restrict. I dont want to do this. 
Let me put this in simpler words. How do I restrict the user input to just Numbers, "-" and A to Z (Caps) ONLY !

Masked Combo Box

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