IVF调用 C 语言DLL发生错误
先贴代码program s!<-------------------------------------------------------------------------------------------------------------------------------
use link_cont
use dfwin !< win api
!<-------------------------------------------------------------------------------------------------------------------------------
implicit none
integer(kind=4) :: add
integer(kind=4) :: a,b
integer(kind=4) :: hwnd
integer(kind=4) :: n_case
integer(kind=4) :: n_data
integer(kind=4) :: lpool
character(len=40), dimension(10) :: c_files
logical :: fail
logical :: syslink
!<-------------------------------------------------------------------------------------------------------------------------------
!<-------------------------------------------------------------------------------------------------------------------------------
pointer(add,FileOpenCont)
hwnd = LoadLibrary('control.dll'C)
if (hwnd <= 0) then
fail = .true.
syslink = .false.
pause 'DLL Loading failure because control.dll was not found'
else
write(*,*) 'Succeed Contempt DLL (control.dll) Loading'
add = GetProcAddress(hWnd,'FILEOPENCONT'C)
call FileOpenCont(n_case,n_data,lpool,c_files)
endif
end program s
module link_cont
interface
subroutine FileOpenCont (ncase,ndata,lpool,xfiles)
!MS$ ATTRIBUTES DLLIMPORT :: FileOpenCont
integer(kind=4) :: ncase
integer(kind=4) :: ndata
integer(kind=4) :: lpool
character(len=40), dimension(10) :: xfiles
endsubroutine FileOpenCont
endinterface
endmodule link_cont
问题描述:
1. 代码为工程使用,用于调用C语言dll库。编译时不需要dll库,所以没有贴出。
2. 此两段代码在CVF下可以编译通过,
而在IVF下编译会报错:error #6401: The attributes of this name conflict with those made accessible by a USE statement.
指的是FILEOPENCONT重名,不知道如何修改,让原有功能同时实现,请教各位大大。
你的写法非常不标准,比如pointer(add,FileOpenCont),这就是不对的(尽管IVF允许这样,但是其他编译器会出错)
可以用标准的写法
module link_cont
interface
subroutine I_FileOpenCont (ncase,ndata,lpool,xfiles)
integer(kind=4) :: ncase
integer(kind=4) :: ndata
integer(kind=4) :: lpool
character(len=40), dimension(10) :: xfiles
endsubroutine I_FileOpenCont
endinterface
endmodule link_cont
program s
use link_cont
use Kernel32
use , intrinsic :: ISO_C_Binding !// 标准模块
implicit none
type(C_FUNPTR) :: C_FileOpenCont !// C 语言指向函数的指针
procedure(I_FileOpenCont) , pointer :: FileOpenCont !// fortran 指向函数的指针
!<-------------------------------------------------------------------------------------------------------------------------------
integer(kind=4) :: add
integer(kind=4) :: hwnd
integer(kind=4) :: n_case
integer(kind=4) :: n_data
integer(kind=4) :: lpool
character(len=40), dimension(10) :: c_files
logical :: fail
logical :: syslink
!<-------------------------------------------------------------------------------------------------------------------------------
hwnd = LoadLibrary('control.dll'//c_null_char)
if (hwnd <= 0) then
fail = .true.
syslink = .false.
write(*,*) 'DLL Loading failure because control.dll was not found'
read(*,*)
else
write(*,*) 'Succeed Contempt DLL (control.dll) Loading'
add = GetProcAddress(hWnd,'FILEOPENCONT'//c_null_char) !//获得地址(整数)
C_FileOpenCont = transfer( add , C_FileOpenCont ) !//把整数的地址转换成 C 指针
call C_F_PROCPOINTER( C_FileOpenCont , FileOpenCont ) !//把C指针转换成 fortran 指针
call FileOpenCont(n_case,n_data,lpool,c_files)
endif
end program s 非常感谢,已测试过代码完全可以。
原有代码比较老,想进行转化,确实有很多古老的写法。
另: 我想知道,为何原有代码ivf编译会出现变量名冲突的问题,而cvf不报错? 因为 pointer(add,FileOpenCont) 这种写法本身就是不规范的,语法并不允许这样。我也不知道为什么 CVF 不报错~~ ksfengjia 发表于 2017-2-15 15:55
非常感谢,已测试过代码完全可以。
原有代码比较老,想进行转化,确实有很多古老的写法。
若是仅考虑Windows平台下使用,完全可以虚拟机安装XP和cvf进行编译,再拷贝dll出来
后续开发工作,可以在保持接口函数不变的情况下另起炉灶
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