what is the unit of Rect via GetClientRect

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I get a rect by GetClientRect,to my suprise is below:
rect.width=1401 ,however my screen is 1366*768 .What is the unit of rect.width? Is it inch or other?

Posted 21-Oct-14 4:07am

codeprojectddx

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Richard MacCutchan 21-Oct-14 10:23am

Units are pixels. Are you sure you are reading the values correctly?

CHill60 21-Oct-14 10:36am

Without any context - have you changed the mapping mode so that the Logical co-ordinates no longer match the device units?

codeprojectddx 21-Oct-14 19:05pm

yes ,i really changed the mapping mode.Now I modify the mapping mode MM_TEXT,when I maxizime the window I find the rect.width is 1366 and the rect.height is 686. Thank you for your answer.

[no name] 21-Oct-14 20:56pm

Good call. I would not have thought of that.

Leo Chapiro 21-Oct-14 10:41am

The unit is pixel. What do you get by GetWindowRect ?

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CHill60 · Accepted Answer · 2014-10-22T00:19:00

Posting (my) solution embedded in the comments ... User had changed the mapping mode[^] so the Logical co-ordinates no longer matched the device units.

Changing the mapping to MM_TEXT brought the two measurements into line.

Some reference material:

GDI Mapping[^]
Device Independent Pixels[^]
Co-ordinate spaces and Transformation[^]

KarstenK · Accepted Answer · 2014-10-21T23:43:00

Solution 2

it is in pixel. Looks like your Windows is bigger than the screen. Check where you set the size.

Posted 21-Oct-14 23:43pm

KarstenK