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Moji,
Define ID as INTEGER(KIND=7) and I think that should fix the problem, with the code working correctly for both WIN32 and X64 compilers.
Ken
Thank you Ken for the suggestion. If the input para ...

In the manual, it is stated that get_font_ID@ requires an integer parameter (/64):
PROGRAM GET_FONT_ID_TEST
IMPLICIT NONE
INCLUDE <windows.ins>

INTEGER :: ID
...

Your code does not issue a correct call to the FTN95 routine CHSORT@.

1. The second argument should be a character array with N elements. Your code has a scalar character variable.

2. The third ...

I noticed that chsort@ behaves differently in 32-bit and 64-bit programs, when the last argument is negative. It is ignored in 32-bit, but causes run time error in a 64-bit program.

PROGRAM CHSORT_ ...

Required time for the linking of 64-Bit programs is considerably longer than the 32-Bit alternatives. I did a benchmark to compare the linking time of these two versions on two of our programs (with t ...

Thank you so much.
In get_im_info$ and get_im_info$$, I just changed the declaration to:
integer(C_INT)::width(*),height(*),nb_colours(*)
I guess that shoul ...

Maybe I didn't explain the problem properly. Here is the syntax of the GET_IM_INFO@ subroutine:
SUBROUTINE GET_IM_INFO@( FILENAME, WIDTH, HEIGHT
+ NB_COLOURS, NB_IMAGES, FORMAT, ERROR )
C ...

As mentioned in ClearWin manual (Appendix A.), NEW_PAGE@ is one of the routines that are useful in new programs. However, it has no ClearWin+ alternative and to use this routine for 64-bit, it is nece ...

According to manual, WIDTH, HEIGHT and NB_COLOURS parameters of get_im_info@ should be integer arrays. However, in clrwin$ these parameters (in get_im_info$) are declared as integer. Therefore, third ...

Here is the Fortran Code (test_code1.f90):
DOUBLE PRECISION FUNCTION test_code1(myarg1, myarg2)
DOUBLE PRECISION myarg1, myarg2
test_code1 = myarg1 + myarg2
END
The code is compiled ...

Paul,

As you asked for it, I created a stand alone 64-Bit Visual Basic program. This program calls a function from a FTN95 DLL and returns the result.

The program works fine and without any err ...

Hi mecej4,

thank you so much for your reply.

As I mentioned in my first post, Excel can also call Fortran functions and the results are correct, but Excel crashes later on, as you try to insert ...

I am writing this post, to get some help regarding calling 64-Bit Fortran subroutines/functions in Excel.

In the previous post, I explained the process that I used and the corresponding error.
...

Paul,
I tested it again (with the new compiler and the new slink64). The Problem is still there and the debugger jumps directly to the last line of the function.

I have also similar problem in calling 64-Bit Fortran dlls in 64-Bit Excel.

I used this simple Fortran code:

DOUBLE PRECISION FUNCTION test_code1(myarg1, myarg2)
DOUBLE PRECISION ...