I am trying to write a forms application in assembly/machine code. The problem I am having is using the function CreateWindowExW. It throws error 1407. I prep all of the variables on the stack. I dont get an error when using RegisterClassA, so that must mean that the class registered correctly. Here is what it looks like in x32dbg :
I entered the variables that are needed for CreateWindowExW in reverse order on the stack as I could see the order from winuser.h in visual studio c++ test program.
Hope this is enough information and thank you to anyone that responds.