請問一下 我用 Delphi 寫 DLL 給 Installshield Express 10 做續號認證 但是在 InsatllShield 那端一值出錯 不知道是哪邊有問題? 可否幫忙看一下 已經測試過回傳值用 Integer 也是一樣不行 用 showmessage 測試過有時候傳入值有三個有時候有四個 所以怪怪的 錯誤訊息為 >> The DLL being called encountered a problem. unit Unit1; interface uses Dialogs; function check_serial(temp1:pchar):pchar;stdcall; implementation function check_serial(temp1:pchar):pchar;stdcall; begin if temp1 <> '123' then begin check_serial :='0'; end else begin check_serial:='1'; end; end; end.

找到問題了 原來傳入值要五個 分別為 longint,pchar,pchar,pchar,pchar 第四個為 serial 回傳值設 longint 就可以正常了 thanks

CallDLLFx (szDLL, szFunction, lvValue, svValue); Description The CallDLLFx function calls a function within a specified DLL. That function must use the following fixed definition, where hwnd is the main window handle for the main InstallShield window: LONG APIENTRY YourFunction (HWND hwnd, LPLONG lpIValue, LPSTR lpszValue); Parameters szDLL Specifies the fully qualified filename of the DLL that contains the function to execute. szFunction Specifies the name of the function in the DLL specified in szDLL. IvValue Specifies a long integer variable to pass by reference to the DLL function. svValue Specifies a string variable to pass to the DLL function. installShield 6.3

Dear wameng 感謝您的回答 以下是我查到的資料(在 installshield express 10的 help) 參數的數量跟您的不太一樣 可能是版本問題吧 anyway , thanks for your help...^^ InstallShield requires a precise prototype for an entry-point function in a DLL called as the result of a custom action. InstallShield Software Corporation does not provide technical support for Windows programming or DLL debugging. You are responsible for correctly writing any DLL functions. Prototype your custom DLL functions as shown below. Any variation in return type or type and number of parameters can cause the custom action to fail. LONG WINAPI Foo(HWND, LPTSTR , LPTSTR, LPTSTR, LPTSTR); InstallShield uses the function prototype to pass the following information to your DLL: Parameter 1 passes the installation's window handle. This parameter always returns NULL. Parameter 2 passes the source directory [SRCDIR]. Parameter 3 passes the support directory [SUPPORTDIR]. Parameter 4 passes the main target directory [INSTALLDIR]. Parameter 5 passes the database directory [DATABASEDIR]. If you are prototyping a custom action to handle the serial number entered in the Customer Information run-time dialog, then Parameter 4 will be the serial number. The body of your DLL function can do just about anything you want. Obviously, you may have good use for the values passed to the function by InstallShield. Your DLL function must return a value of type LONG as a state flag signaling the completion of the routine. If your function returns zero, the installation exits. If it returns any other value, the installation continues.