How to get rid of "nothrow" ?

[Olivier Pisano]

On Sunday, 17 May 2020 at 09:27:40 UTC, Vinod K Chandran wrote:
> Hi all,
> I am trying to create a win32 based gui in dlang. So far so 
> good. I can create and display my window on screen. But for 
> handling messages, i planned to write something like message 
> crackers in c++. But since, my WndProc function is a "nothrow" 
> function, i cannot use any function without "nothorw" in that 
> WndProc. How to solve this problem ?

Hi,

You need to catch any exceptions inside of your WndProc so they 
don't propagate:

LRESULT CALLBACK WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, 
LPARAM lParam) nothrow
{
     try
     {
         // your code logic here may call throwing functions
     }
     catch (Exception e)
     {
         // You should log exceptions here
     }
}