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I am creating an image Thumbnail Image for my tooltip control as background image using Drawing GetThumbnailImage.Also i have included multiple .h files related to my file.

What I have tried:

I have tried
C++
public:
	Image^ GetThumbnailImage(
	int thumbWidth,
	int thumbHeight,
	Image::GetThumbnailImageAbort^ callback,
	IntPtr callbackData);

Image::GetThumbnailImageAbort^ callback =  gcnew Image::GetThumbnailImageAbort(ThumbnailCallback);
Bitmap^ myBitmap = gcnew Bitmap("image.jpg");
System::Drawing::Image^ pThumbnail =
 myBitmap->GetThumbnailImage(50,50,callback,IntPtr::Zero);
e->Graphics->DrawImage(pThumbnail,96,96);
Posted
Updated 24-Jan-17 22:50pm
v2
Comments
Richard MacCutchan 21-Jan-17 4:52am
   
The name getthumbnailumage is used somewhere in your code, but is not correct.
KarstenK 24-Jan-17 8:54am
   
plz show the complete error message which the linker spitted out. I need more details for an answer.

1 solution

You must implement the annonced ThumbnailCallback function in your code.
C++
Image::GetThumbnailImageAbort^ callback =  gcnew Image::GetThumbnailImageAbort(ThumbnailCallback);//you need to implement the function!!!

Look here for the details. The functions must return a bool. False means not to abort.
   

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