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If you have the control's handle, 'SetWindowText()' should work, e.g.<br />
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SetWindowText(hToolTip,&quot;Ne<wbr />w Text&quot;);
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If you have the control's handle, 'SetWindowText()' should work, e.g.

SetWindowText(hToolTip,"New Text");

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Oops, let me clarify. &nbsp;I have the handle to the button/textbox/etc.., not the tooltip window itself.
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Oops, let me clarify.  I have the handle to the button/textbox/etc.., not the tooltip window itself.

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If you have the control's handle, you could 'EnumChildWindows()' until you find one with the 'TOOLTIPS_CLASS' class name. BTW, a good starting point for samples is <a href="http://msdn.microsoft.com/library/default.asp?url=/library/en-us/shellcc/platform/commctls/tooltip/tooltip.asp" rel="ugc nofollow">http://msdn.microsoft.com/library/default.asp?url=/library/en-us/shellcc/platform/commctls/tooltip/tooltip.asp</a>&nbsp;(&quot;About ToolTip Controls &quot;)
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If you have the control's handle, you could 'EnumChildWindows()' until you find one with the 'TOOLTIPS_CLASS' class name. BTW, a good starting point for samples is http://msdn.microsoft.com/library/default.asp?url=/library/en-us/shellcc/platform/commctls/tooltip/tooltip.asp [http://msdn.microsoft.com/library/default.asp?url=/library/en-us/shellcc/platform/commctls/tooltip/tooltip.asp] ("About ToolTip Controls ")

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Okay, getting closer. &nbsp;<br />
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Using Spy++ I can narrow down which tooltip window I need to change the text in. &nbsp;Using SetWindowText on will change the caption in Spy++, but the tooltip text stays the same. &nbsp;Any ideas where to go from here.
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Okay, getting closer.  

Using Spy++ I can narrow down which tooltip window I need to change the text in.  Using SetWindowText on will change the caption in Spy++, but the tooltip text stays the same.  Any ideas where to go from here.

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Is there a way to change the Tooltip text when the only info I have is the handle of the control? &nbsp;
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Is there a way to change the Tooltip text when the only info I have is the handle of the control?  

Change Tooltip text using the contols handle no MFC

C++ is an intermediate-level general-purpose programming language, not to be confused with C or C#. It was developed as a set of extensions to the C programming language to improve type-safety and add support for automatic resource management, object-orientation, generic programming, and exception handling, among other features.