Question about Message Boxes

12 posts

TehMuffinManMarch 26, 2011 at 3:39 AM#

Question about Message Boxes

Howdy folks! Brand new here... 🙂

I am wondering if there is an alternative to being forced to use gotos and labels as the result of buttons in a message box. Instead of using labels I would like to set some flags or something similar. I have been a developer for many years and the thought of using gotos makes me cringe a little bit haha! I am using a MB_YESNOCANCEL message box and once the flags are set I would do some logic on them via LogicLib.nsh.

Thanks for any info!

pengyouMarch 26, 2011 at 9:36 AM#

Try reading the manual and the example scripts supplied with NSIS.

Here is a simple example to get you started:

!include "LogicLib.nsh"
Name "Demo"
OutFile demo.exe
RequestExecutionLevel "user"
ShowInstDetails show
Section default
   ${If} ${Cmd} `MessageBox MB_YESNO|MB_ICONQUESTION 'Display MAKENSIS help?' IDYES`
       DetailPrint "MAKENSIS Help:"
       DetailPrint ""
       nsExec::ExecToLog '"${NSISDIR}\makensis.exe" /CMDHELP'
       DetailPrint ""
  ${Else}
      DetailPrint ""
      DetailPrint "User did not request the help listing"
      DetailPrint ""
  ${EndIf}
SectionEnd

TehMuffinManMarch 26, 2011 at 3:03 PM#

Thanks for the info! My apologies, I did look through the manual (but not example scripts) and every mention I could find of MessageBox used labels. I must have missed the part where they work with logical flow statements. I had also googled for hours trying to find this information too so I hope you don't think I was lazy haha 🙂

TehMuffinManMarch 26, 2011 at 3:06 PM#

I also need this to work with YESNOCANCEL (so 3 buttons), off to searching the manual again and examples I go! Thanks again for pointing me in the right direction.

TehMuffinManMarch 26, 2011 at 3:25 PM#

How about something like this?

!include "LogicLib.nsh"
Name "Demo"
OutFile demo.exe
RequestExecutionLevel "user"
ShowInstDetails show
Section default
   ${If} ${Cmd} `MessageBox MB_YESNOCANCEL|MB_ICONQUESTION 'Display MAKENSIS help?' IDYES`
       DetailPrint "MAKENSIS Help:"
       DetailPrint ""
       nsExec::ExecToLog '"${NSISDIR}\makensis.exe" /CMDHELP'
       DetailPrint ""
  ${ElseIf ${Cmd} `IDNO`}
      DetailPrint ""
      DetailPrint "User did not request the help listing"
      DetailPrint ""
  ${Else}
      {DO SOMETHING ELSE HERE}
  ${EndIf}
SectionEnd

pengyouMarch 26, 2011 at 3:27 PM#

I find "Windows Grep" useful for searching the example files supplied with NSIS.

TehMuffinManMarch 26, 2011 at 3:41 PM#

Originally Posted by pengyou View Post

I find "Windows Grep" useful for searching the example files supplied with NSIS.

That is exactly what I already did. I looked through all instances of "messagebox" and the only ones I found using LogicLib only had 2 choices like your original example.

I also grepped for instances of ${If} and ${Cmd} together to see if they were possibly used with another command other than messagebox, no dice.

I am not lazy, I know how to search for stuff. This isn't my first rodeo =( I may have seen what I needed and not known it was what I needed.

Sorry for the troubles 🙁

pengyouMarch 26, 2011 at 3:45 PM#

${ElseIf ${Cmd} `IDNO`}

will not compile for several reasons.

Have you bothered to look at the LogicLib.nsi example script? It shows that LogicLib uses ${ElseIf} for the "if ... elseif ... else ... endif" structure.

The ${If} ${Cmd} structure conditionally executes an inline statement, depending on a true value of the provided NSIS function. Your suggestion uses `IDNO` which is not a function.

TehMuffinManMarch 26, 2011 at 4:15 PM#

Originally Posted by pengyou View Post

will not compile for several reasons.

Have you bothered to look at the LogicLib.nsi example script? It shows that LogicLib uses ${ElseIf} for the "if ... elseif ... else ... endif" structure.

The ${If} ${Cmd} structure conditionally executes an inline statement, depending on a true value of the provided NSIS function. Your suggestion uses `IDNO` which is not a function.

Yes I have "bothered" to. I hope by now I would have proved my self knowledgeable and competent... I am not someone looking for an easy answer. I had already spent a day looking for a solution to this. I just explained how I even used wingrep to search through all the example file.

My question was never about how to setup the logic structure, I know how to use ${ElseIf} just fine (in general that is). My question is how to use that logic structure specifically with MessageBox YESNOCANCEL.

There are only 2 examples in LogicLib.nsi that reference MessageBox.

  ; ifcmd..||..| and if/unless cmd
  StrCpy $R2 ""
  ${IfCmd} MessageBox MB_YESNO "Please click Yes" IDYES ${||} StrCpy $R2 $R2A ${|}
  ${Unless} ${Cmd} `MessageBox MB_YESNO|MB_DEFBUTTON2 "Please click No" IDYES`
    StrCpy $R2 $R2B
  ${EndUnless}
  ${If} $R2 == "AB"
    DetailPrint "PASSED IfCmd/If Cmd test"
  ${Else}
    DetailPrint "FAILED IfCmd/If Cmd test"
  ${EndIf}

Function ComponentsLeave
  ; Section flags tests (requires sections.nsh be included)
  ${Unless} ${SectionIsSelected} ${TESTS}
    MessageBox MB_OK "Please select the component"
    Abort
  ${EndIf}
FunctionEnd

Neither of the above reference using an ${ElseIf}

The only example in that script that references ${ElseIf} is the below, and it is just using strings, nothing to do with commands like MessageBox.

  ; if..elseif..else..endif
  StrCpy $R1 A
  StrCpy $R2 ""
  ${If} $R1 == A
    StrCpy $R2 $R2A
  ${ElseIf} $R1 == B
    StrCpy $R2 $R2B
  ${ElseUnless} $R1 != C
    StrCpy $R2 $R2C
  ${Else}
    StrCpy $R2 $R2D
  ${EndIf}
  ${If} $R1 == D
    StrCpy $R2 $R2D
  ${ElseIf} $R1 == A
    StrCpy $R2 $R2A
  ${ElseUnless} $R1 != B
    StrCpy $R2 $R2B
  ${Else}
    StrCpy $R2 $R2C
  ${EndIf}
  ${If} $R1 == C
    StrCpy $R2 $R2C
  ${ElseIf} $R1 == D
    StrCpy $R2 $R2D
  ${ElseUnless} $R1 != A
    StrCpy $R2 $R2A
  ${Else}
    StrCpy $R2 $R2B
  ${EndIf}
  ${If} $R1 == B
    StrCpy $R2 $R2B
  ${ElseIf} $R1 == C
    StrCpy $R2 $R2C
  ${ElseUnless} $R1 != D
    StrCpy $R2 $R2D
  ${Else}
    StrCpy $R2 $R2A
  ${EndIf}
  ${If} $R2 == "$R1$R1$R1$R1"
    DetailPrint "PASSED If..ElseIf..Else..EndIf test"
  ${Else}
    DetailPrint "FAILED If..ElseIf..Else..EndIf test"
  ${EndIf}

What am I missing? Do I have an old example file or something? I promise I am not an idiot! LOL

TehMuffinManMarch 26, 2011 at 4:17 PM#

Originally Posted by pengyou View Post

will not compile for several reasons.

Have you bothered to look at the LogicLib.nsi example script? It shows that LogicLib uses ${ElseIf} for the "if ... elseif ... else ... endif" structure.

The ${If} ${Cmd} structure conditionally executes an inline statement, depending on a true value of the provided NSIS function. Your suggestion uses `IDNO` which is not a function.

Also FYI I typoed that, what I had meant was

${ElseIf} ${Cmd} `IDNO` (which still won't work obviously)

Please excuse the slip of the keyboard, I know how to use ${ElseIf}, this isn't my first NSIS script 🙂

TehMuffinManMarch 26, 2011 at 5:41 PM#

For simplicity, this is exactly what I am trying to figure out... (I can ramble some)

Reference the [WHAT GOES HERE]

    ${If} ${Cmd} `MessageBox MB_YESNOCANCEL|MB_ICONEXCLAMATION "PRORAM X is already installed. Click YES to remove the installed version found in C:\Program Files(x86). Click NO to skip uninstall and choose a different install location (not recommended) or CANCEL to terminate the installer." IDYES`
        MessageBox MB_OK "Yes was clicked"
    ${ElseIf} {WHAT GOES HERE??}
        MessageBox MB_OK "No was clicked"
    ${Else}    
        MessageBox MB_OK "Cancel was clicked"
    ${EndIf}

Afrow UKMarch 26, 2011 at 8:34 PM#

You have to use labels I'm afraid, unless you use nsL (see sticky topic).

Stu