在NSIS中调用dll函数并返回布尔值

问题描述 投票:0回答:1

我试图在我的dll中调用该函数,但它失败了。这是我的NSIS脚本:

!include "LogicLib.nsh"
Section "MyTest"
Strcpy $0 "abc"
System::Call 'MyDll::FindSomething(t, b) i(r0, false) .r1'

${If} $1 == true
    MessageBox MB_OK "1"
${ElseIf} $1 == false
    MessageBox MB_OK "0"
${EndIf}
SectionEnd

FindSomething函数应返回布尔值true或false。我的脚本的结果在执行后没有显示任何内容。

c dll syntax nsis
1个回答
0
投票
  • 你没有解压缩MyDll.dll?
  • false不是受支持的关键字,请使用0

没有C / C ++声明,很难给出一个完整的例子,但我可以尝试:

Section
InitPluginsDir
File "/oname=$PluginsDir\MyDll.dll" "c:\myfiles\MyDll.dll" ; Extract

System::Call 'KERNEL32::AddDllDirectory(w "$PluginsDir")' ; Make sure we are allowed to load from here

System::Call 'KERNEL32::LoadLibrary(t "$PluginsDir\MyDll.dll")p.r9'
MessageBox mb_OK "Loaded MyDll at address $9" ; This should not be 0!

; bool __cdecl FindSomething1(char* p1, bool p2):
StrCpy $0 "abc"
System::Call 'MyDll::FindSomething1(m r0, b 0)b.r1 ?c'
MessageBox mb_OK "Returned $1"

; int WINAPI FindSomething2(LPTSTR p1, BOOL p2):
StrCpy $0 "abc"
System::Call 'MyDll::FindSomething2(t r0, i 0)i.r1'
MessageBox mb_OK "Returned $1"
; ${If} $1 <> 0 ...

System::Call 'KERNEL32::FreeLibrary(p r9)'
SectionEnd

只有非常新版本的System插件支持b类型,但无论如何你都可以在大多数地方使用i

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