Interface And Graphics :: Displaying Images On Mouse Hover In Different Window?

Jan 28, 2009

I am starting to develop a card game client for a CCG a friend of mine and I are creating.

I have 2 forms Client.vb and Hand.vb linked with a module.vb

In essence when the app starts up I see the client. I can then click the "Hand" button and the Hand Window is shown as well.

What my goal is is to have it so that when i hover over the card (picturebox) in my hand form that it displays a larger image of that card in the preview box (Another picture box) In Client.vb

I have everything working except when i actually mouse over the image in the hand form it creates an error:

Error:A first chance exception of type 'System.NullReferenceException' occurred in CCG 2.0.exe

The code in the mouse hover event:

Code:
F1.PictureBox2.Image = F2.PictureBox1.Image

Im Almost certain im going about this the wrong way but I cant seem to figure out any other way...

PS.I have attached an image to demonstrate what Im trying to do...

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how to raise the mouse leave and mouse hover events for VB when i place my mouse cursor over the button.

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but currently, When i excute this two events, the for will open and close very,very fast. so fast that it is like spamming the VB.

So i am wondering how to change the code that i have to excecute the event one time every time the mouse is over the button which is created at run time.

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Private Sub Button_MouseLeave(ByVal sender As System.Object, ByVal e As System.EventArgs)
For Each ctl As Control In PictureBox1.Controls

[Code].....

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[URL] I have tried heslacher's method which is Hi clzanas, you problems had been the result of calling a for each loop inside the events. If you only want for the button you hoover / leave to call the ShowDetails.Open/close, then you can take the code below:

Private Sub Button_MouseLeave(ByVal sender As System.Object, ByVal e As System.EventArgs)
If TypeOf sender Is Button Then
ShowDetails.Close()

[code]....

But i got the same results as my previous code, resulting in the form opening and closing so fast that it is like spamming the window.

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[Code]
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[code].....

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[Code]....

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[Code]...

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