GetDriveType始终返回1个nsis

Question

嗨，我正在尝试用下面的脚本在电脑上找到DVD驱动器。GetDriveType总是返回1，即使我手动传递驱动器号，它仍然返回1，您能告诉我为什么会这样吗?我对nsis脚本完全陌生

System::Call 'kernel32::GetLogicalDrives()i.r0'
StrCpy $1 $windir 3 ; Fallback if things go wrong
StrCpy $2 0
StrCpy $4 65 ; 'A'
loop:
    IntOp $3 $0 & 1
    ${If} $3 <> 0
        IntFmt $3 "%c:\" $4
        MessageBox MB_OK "Drive : $3"
        System::Call 'kernel32::GetDriveType(t,.r3)i.r5'
        MessageBox MB_OK "Value of 5555555: $5"
        StrCmp $5 5 0 NoDrive
            MessageBox MB_OK "Found drive $3"
            StrCpy $1 $3
        Nodrive:
            ;do nothing
    ${EndIf}
    IntOp $4 $4 + 1
    IntOp $0 $0 >> 1
StrCmp $0 0 "" loop
System::Call 'kernel32::GetDriveType(t,"D:\")i.r5'
StrCmp $5 5 0 NoDr
    MessageBox MB_OK "Found D as $D"
NoDr:

Answer 1

正确的语法是System::Call 'kernel32::GetDriveType(tr#)i.r#' (逗号是参数分隔符，.表示没有输入，本例中有输入)：

!include LogicLib.nsh
System::Call 'kernel32::GetLogicalDrives()i.r0'
StrCpy $2 0
StrCpy $4 65 ; 'A'
loop:
    IntOp $3 $0 & 1
    ${If} $3 <> 0
        IntFmt $3 "%c:\" $4
        System::Call 'kernel32::GetDriveType(tr3)i.r5'
        DetailPrint "$3=$5"
    ${EndIf}
    IntOp $4 $4 + 1
    IntOp $0 $0 >> 1
StrCmp $0 0 "" loop