problem in calling winapi that use pointer to struct from c#

[Guest]

hi am using panel with autoscroll , now i want to call window api
BOOL GetScrollInfo(HWND hwnd, int fnBar, LPSCROLLINFO lpsi));

now am doing like tht
unsafe public static extern bool GetScrollInfo(uint hwnd,uint SB_HORZ,
SCROLLINFO* si );

but it causes a problem in lasst parameter , pls help

 

[Guest]

Hi amit

The best thing to do is to use the pinvoke website to find this sort of
information:

Try this URL for GetScrollInfo:

HTH

Nigel Armstrong

http://www.pinvoke.net/default.aspx/user32.GetScrollInfo

 

[Jeff Gaines]

hi am using panel with autoscroll , now i want to call window api
BOOL GetScrollInfo(HWND hwnd, int fnBar, LPSCROLLINFO lpsi));

now am doing like tht
unsafe public static extern bool GetScrollInfo(uint hwnd,uint
SB_HORZ, SCROLLINFO* si );

but it causes a problem in lasst parameter , pls help

Try:

public static extern bool GetScrollInfo(uint hwnd, uint SB_HORZ, ref
SCROLLINFO si);

You don't need 'unsafe' then. You can also declare the hwnd as an
IntPtr which is often easier.

As somebody else pointed out pinvoke.net can be helpful or
microsoft.public.dotnet.framework.interop.