Erasure a. PointToClient new Point e. This article is contributed by Ashish Sharma. FileDropString Try ' Assign the first image to the 'picture' variable. X and DragEventArgs. When this method is called with no parameters, the entire client area is added to the update region. FromFile files 0 ' Invalidating C the picture location equal to the drop point. If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute. Invalidating C All iterators which point to an element before the point of insertion are unaffected but all others are invalidated. But, in case invalidating C due to insertion the size of the vector becomes more than the previous capacity then all iterators get invalidated as discussed in the above example. The OnPaint method is overridden to repaint the image each time the invalidating C is painted; otherwise the image would only persist until the next repainting.