pb调用delphi的dll文件就是出错，请大侠们指点一下。(100)

L

lin315

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• 2010-03-14

• #1

出现application terminated error:error calling external function read at line 2 in clicked event of object cb_1 of main.dll文件： library Project2;uses SysUtils, Classes; Function read(b1char;d1:integer;a1char)char; stdcall ; begin if (b1='1')and (a1='2')then Result:= '正确' else Result:= '错误'; a1:= Result; end ;{$R *.res} exports read;beginend.pb中的函数：public function long read (long b1,long d1,ref string a1) library "project.DLL" alias for "Read"请大侠帮帮看看，指点一下。

 

W

wangdonghai

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• 2010-03-14

• #2

PB里的函数声名错了,delphi的PChar在PB里对应的是什么类型呀，应该不会是long类型吧.虽然没弄过PB,但我猜想应该是这样声名才行：public function string read (long b1,long d1,ref string a1) library "project.DLL" alias for "Read"

 

L

lin315

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• 2010-03-14

• #3

能不能在DLL文件中改呀。

 

L

lin315

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• 2010-03-14

• #4

dll文件我改成这样行不行： library Project2;uses SysUtils, Classes; Function read(b1char;d1:integer;a1char):integer; stdcall ; begin if (b1='1')and (a1='2')then Result:= 1 else Result:= 2 end ;{$R *.res} exports read;beginend.

 

L

lin315

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• 2010-03-14

• #5

救命呀，急急

 

L

lin315

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• 2010-03-14

• #6

脑子搞大了，那位大侠出手一下。

 

L

lin315

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• 2010-03-14

• #7

怎么人没有帮我呀。

 

B

bsense

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• 2010-03-15

• #8

Function read(b1char;d1:integer;a1char):integer; stdcall public function long read (long b1,long d1,ref string a1) library "project.DLL" alias for "Read"上面参数你都知道用refpublic function string read (string b1,string d1,string a1) library "project.DLL" alias for "Read"返回胡是string 而参数似乎不必ref

 

L

lin315

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• 2010-03-15

• #9

能不能改DLL中的函数呀。我总觉得函数声明那里有问题。我用DELPHI程序调用是正确的。