Have you looked at _isnan()? "Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

Use Direct Draw that is fastest way to draw something. Make a surface in VGA memory,get the pointer of it, write any thing whatever you want. If you don't know anything about DX. just make a memDC and write something there and blt it.

I don't think this is possible in any dependable way. If you want parts of the controls transparent, you might want to investigate SetWindowRgn. Hiding the controls under some circumstances might perhaps be another alternative?

MailMonty, thanks for your reply, I have tried to use GetScrollRange but nothing happened, the min&max of the range are both zero but i want to get the range and scroll it exactly have you any good idea?

For C|C++ clients there is no sense for this - they must always specify the parameter. Though MIDL has two keys to do it - [defaultvalue] and [optional]. The [optional] applies to the VARIANT parameter. The [defaultvalue] applies to other types. With best wishes, Vita

any ideas??? Waiting...

thank you Joel, it works using DeviceCapabilities function. very kind of you

thank you Steve, it works , the reason is the tablename begins with a digit. it's very kind of you

ok,thanks let me try

thank you so much

Many thanks dear Moak , thanks for your kind advice, and now the problem is gone.

Shouldn't just create a compatible DC, a bitmap the size of the scrollview, select the bitmap into the DC, and then sending WM_PRINT to the scrollview work?

thanks for your reply. the problem is: when the controlbar if floating,the toolbar is grayed and doesn't work. Only when the controlbar is in docking state,the toolbar will work well. I don't know what the matter, please help me. thouthands of thanks

thank you for your reply. Sure,I have check all of above,but find nothing It puzzle me too much:zzz: