Need help in a C# code...

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Can anybody explain me:

C#

int Form1.SendMessage(int hwnd, int wMsg,int wParam, object IParam)

It is used to copy image to clipboard.

EXAMPLE:

C#

SendMessage(hHwnd, WM_CAP_EDIT_COPY, 0, 0);

Here what are those parameters(hwnd,wMsg,wParam,IParam) mean??

Posted 25-Jul-13 8:35am

Atul Khanduri

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madhav_jain 25-Jul-13 14:57pm

explain ur ques in detail..

[no name] 25-Jul-13 14:58pm

The documentation explains it pretty well, http://msdn.microsoft.com/en-us/library/windows/desktop/ms644950(v=vs.85).aspx

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OriginalGriff · Accepted Answer · 2013-07-25T09:02:00

SendMessage is not a part of "normal" .NET - it's a Windows function that you access from an external native DLL.
Look at the MSDN article on SendMessage[^] and it tells you what the parameters mean - or at least the loose overview of them. The values you pass in the wMsg parameter will affect what the values in wParam mean, and the values in wParam (as modified by the wMsg parameter) will affect what the IParam parameter should be and what it does. So it's not as simple as "this is what it does" or "this is what it means".

But why are you using that? Is there some good reason why you aren't just saying

C#

Image im = Image.FromFile(@"D:\Temp\MyPic.jpg");
Clipboard.SetDataObject(im);

Thanks7872 · Accepted Answer · 2013-07-25T09:00:00

Solution 1

Refer these two links

MessageWindow.SendMessage Method[^]

MessageWindow Members[^]

Regards..:laugh: