Programming in managed code was always beneficial and pleasing until I came across this annoying problem. It involves an error that occurs while communicating with unmanaged code if I'm right. Being a hobbyist programmer, I am at a loss as
I can't find out what exactly the error is.
The IDE points out Application.Run(new frmReportContainer()); [it once pointed out a statement to change the border style of a text box] as the line with the error, or rather, the CallBackOnCollectedDelegate. I have written an MDI application to
write reports. The error occurs in the process of the user filling up the form. I have used masked text boxes and I decided to show a tooltip (and also turn the text box red in case of particular errors). And in the Click and Keydown events of the
text box I hid the tooltip (and turned the colour back to normal as well.)
Here is the code:
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