I have Delphi 2010 built DLL with two methods:
我用两种方法构建了Delphi 2010 DLL:
function Foo1(a, b: Integer):PChar; export; stdcall;
function Foo2(a, b, c:Integer):PChar; export; stdcall;
exports Foo1, Foo2;
Each of them returns Result := PChar('Test') .
它们每个都返回结果:= PChar('Test')。
My C++\CLI code
我的c++ / CLI的代码
in header
在头
typedef const wchar_t* (*pFUNC1)(int a, int b);
pFUNC1 TestFoo1;
typedef const wchar_t* (*pFUNC2)(int a, int b, int c);
pFUNC2 TestFoo2;
Initialize by LoadLibrary and GetProcAddress functions. Usage: TestFoo1(0,0) and TestFoo2(0,0,0);
由LoadLibrary和GetProcAddress函数初始化。用法:TestFoo1(0,0)和TestFoo2(0,0,0);
Both works in Release mode.
But in Debug mode Foo2 is being aborted.
两者都在发布模式下工作。但是在调试模式下，Foo2将被中止。
Please advise what is wrong.
请告知哪里出了问题。
1 个解决方案
#1
4
Most likely you have calling convention mismatch. Change the stdcall in the Delphi to cdecl to match your C++/CLI code.
很可能您有调用约定不匹配。将Delphi中的stdcall更改为cdecl，以匹配您的c++ /CLI代码。
As an aside, you will need to be careful with the lifetime of your strings if ever you attempt to return a value from the DLL that is not a literal stored in read-only memory in the data segment. But that's not the problem here because PChar('Test') has the same lifetime as the DLL.
顺便说一句，如果您试图从DLL中返回不是存储在数据段只读内存中的文本的值，那么您将需要小心处理字符串的生命周期。但这不是这里的问题，因为PChar('Test')与DLL的生命周期相同。
#1
4
Most likely you have calling convention mismatch. Change the stdcall in the Delphi to cdecl to match your C++/CLI code.
很可能您有调用约定不匹配。将Delphi中的stdcall更改为cdecl，以匹配您的c++ /CLI代码。
As an aside, you will need to be careful with the lifetime of your strings if ever you attempt to return a value from the DLL that is not a literal stored in read-only memory in the data segment. But that's not the problem here because PChar('Test') has the same lifetime as the DLL.
顺便说一句，如果您试图从DLL中返回不是存储在数据段只读内存中的文本的值，那么您将需要小心处理字符串的生命周期。但这不是这里的问题，因为PChar('Test')与DLL的生命周期相同。