I have a labview function which takes a string input and passes it to the output when the user clicks OK on a 2 button dialog. I have built this to a dll and am then calling the function from a C++ enviroment using the LoadLibrary function. If i define the front panel display settings to default and NOT modal the vi displays correctly but the dialog box does not. If i set the vi front panel to Modal then the vi front panel does not display correctly, therefor from this i conclude that the dialog must be modal in its display mode. My question is from C++ how can i correctly call a dll which displays a Modal form? or how can i change the dialog to a modeless/default behaviour as can be done for the vi front panel? Thanks in advance for any help.

Hi, Thanks for yor response. The dialog box only partially displays. No i have not tried the express vi's, but i did create a vi to behave the same as a 2 button dialog which allowed me to define it as modeless. This also only partially displayed. I have since first posting also tried running the dll from teststand and also using labview to call the dll, in both cases the dll loads and behaves correctly, that the dialog box displays correctly. This suggests that the problem is with the C++ code but not being a very experienced C++ programmer i am not sure how to debug the problem further. Any help is greatfully appreciated.

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