.NET (Core and Framework)

Setting Style (SetStlye Method) With API

24-Apr-05 8:58

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PeterRitchie.com

THEMYTH23-Apr-05 1:45

23-Apr-05 1:45

Hi coders,

I was wondering about the apis used while writing the SetStyle Method. I am creating an API control class using NativeWindow class in .net framework. I need to set styles of the window (like double buffer, userpaint, resize redraw...)
Some of these styles can be applied by using SET... apis (like instead of SetStyle Opaque, True ; SetBkMode api can be used)
I need to know the apis used for all other styles in ControlStyles enum.

Thank you for your time

Best Regards
Emre YAZICI

Peter Ritchie24-Apr-05 9:08

24-Apr-05 9:08

The ControlSetStyle method *is* used to set the ControlStyles bits.

Or, are you talking about a different API other than .NET?

PeterRitchie.com

THEMYTH24-Apr-05 20:15

24-Apr-05 20:15

Thank you for your answer. I know what the ControlStyle bits, and I know what is it doing, the reason why i am asking for a way to perform the SAME thing(as SetStyle does)

I think we are able to set the styles with API
e.g (As I mentioned) Instead of SetStyle (opaque,true) you can use the SetBkmode API, and (I am not sure) instead of Double buffer, you can use CreateCompatibleDC API. I am asking for the other ones' apis.

Do you know them?

Thanks

Best Regards
Emre YAZICI

Peter Ritchie25-Apr-05 3:21

25-Apr-05 3:21

Okay, you've misused the work API--which is an interface (or a group of functions/methods). You're looking for all the methods that perform the same thing as SetStyle for each bit...

There normally isn't a one-to-one correspondance with a style bit and a method or a function. Many of the styles shouldn't be changed after the window has been created, they're ment to be used as the window is being created where calling a dozen or so methods instead of SetStyle would be tedious. Even in other APIs like MFC hyou have to resort to SetStyle (which wraps SetWindowsLong(GWL_STYLE,...) ).

Some of the styles in ControlStyles are .NET specific; meaning they're only handled as a cohesive attribute in .NET.

I don't know of any exhaustive lists that would give you the information you want. Maybe you could detail what you want to do or why simply calling SetStyle doesn't suit your needs.

PeterRitchie.com

THEMYTH25-Apr-05 9:57

25-Apr-05 9:57

Well

Thank you for your answer
Your answer was just like i guess
SetWindowsLong api does not support all of these styles, we need to use others i think

Why dont I call the SeetStyle , because i do create a window using CreateWindowEx and all the other operations like Moving, Showing the window or drawing line, filling a rectangle will be performed by APIs. I want to do everything with apis. Because the way is faster!!

Thanks anyway..

Best Regards
Emre YAZICI

Peter Ritchie25-Apr-05 10:37

25-Apr-05 10:37

Are you using the Win32 API, via P/Invoke?

Why are you using .NET at all if you're simply doing everything via Win32 API?

PeterRitchie.com

THEMYTH25-Apr-05 19:15

25-Apr-05 19:15

I tried both, I mean
1 ) I have tried writing a grid control with usercontrol and .net frameworks' Graphics object( using Drawline, FillRect...)
2 ) I have tried the same thing with CreateWindowEx, LineTo, MoveToEx ....

When I compare them the second one was faster than the first one

This is why i want to use APIs

Best Regards
Emre YAZICI

Peter Ritchie26-Apr-05 18:13

26-Apr-05 18:13

If it's a stand-alone application (i.e. not client-server) then I would suggest just writing it in C++. The work involed in marshalling all the API structures and data just isn't work the time otherwise.

If speed is that much of an issue for you. Even with .NET 2.0 there are some performance differences between .NET applications and "native"/unmanaged.

see http://www.sysinternals.com/blog/#111409937327999900[^]

PeterRitchie.com

THEMYTH27-Apr-05 7:40

27-Apr-05 7:40

Of course, c++ is the best way of doing that, I was looking for a way to do it in VB.Net or C#.Net

Thank you anyway

Best Regards
Emre YAZICI

HumanOsc28-Apr-05 5:53

HumanOsc

28-Apr-05 5:53

It'S funny... i have made some same tests... the better performance dosen't comes from the native window creation, beacause the control class do the same thing (only one time)...

The better Performance comes only from the usage of native drawing functions...

THEMYTH28-Apr-05 9:30