HiEdit: EM_GETTEXTRANGE faster than WM_GETTEXT, HiEdit control: The EM_GETTEXTRANGE message is much faster than WM_GETTEXT message

You certainly can't call it a bug. More of an observation really.

HiEdit control.

For some reason the EM_GETTEXTRANGE message is much faster than WM_GETTEXT message for the same amount of work. How much faster? About 2X, according to my amateur benchmarks. Not a big deal. Just wanted to point it out.

Hi

EM_GETTEXTRANGE message retrieves a specified range of characters from a rich edit control.

An application sends a WM_GETTEXT message to copy the text that corresponds to a window into a buffer provided by the caller.

This can you read by msdn.

Quick search google

Greets

Thank you for your reply.

I was referring to these messages as they apply to the HiEdit control. Although the documentation from msdn is a good reference, it does not always apply exactly to the HiEdit control.

In this case, both of these messages extract text from the HiEdit control. One of the messages extracts a range of characters and the other extracts from the beginning of the control up to a specified length. My point was that if both messages were requested to collect the first 512K (for example) of the control, the EM_GETTEXTRANGE message would get the text ~2 times faster than the WM_GETTEXT message.

Them be my thoughts...