如何在nsis中調用組合框上的onclick事件

Question

我想在nsis安裝程序的組合框中應用onClick事件，以便我可以在組合框上單擊按鈕上執行功能。

Answer 1

onclick事件是不適合組合框，您想要的OnChange事件，因爲用戶可以用箭頭鍵等

改變它開火更改事件編程可以直接調用處理或欺騙ComboBox控件：

!include nsDialogs.nsh 
!include WinMessages.nsh 
Page Custom MyPageCreate 
Page InstFiles 

Function OnComboChange 
Pop $0 
SendMessage $0 ${CB_GETCURSEL} "" "" $2 
System::Call 'USER32::SendMessage(i$0,i${CB_GETLBTEXT},i$2,t.r2)' 
MessageBox mb_ok "OnComboChange: $2" 
FunctionEnd 

Function EmulateChangeMethodA 
Pop $0 ; Throw away parameter we don't care about 
Push $1 
Call OnComboChange 
FunctionEnd 

Function EmulateChangeMethodB 
Pop $0 ; Throw away parameter we don't care about 
FindWindow $0 "EDIT" "" $1 
SendMessage $1 ${WM_COMMAND} 0x4000000 $0 ; Send WM_COMMAND,MAKELONG(0,EN_UPDATE),hwndEdit 
FunctionEnd 

Function EmulateChangeMethodC 
Pop $0 ; Throw away parameter we don't care about 
!ifndef CB_GETCOMBOBOXINFO 
!define CB_GETCOMBOBOXINFO 0x0164 
!endif 
System::Call '*(&l4,&i16,&i16,i,i,i,i)i.r2' 
SendMessage $1 ${CB_GETCOMBOBOXINFO} "" $2 ; This only works on Vista+? 
System::Call '*$2(i,&i16,&i16,i,i,i,i.r0)' 
System::Free $2 
SendMessage $1 ${WM_COMMAND} 0x30000 $0 ; ; Send WM_COMMAND,MAKELONG(0,LBN_SELCANCEL),hwndList 
FunctionEnd 

Function MyPageCreate 
nsDialogs::Create 1018 
Pop $0 

${NSD_CreateCombobox} 0 30u 100% 200u "" 
Pop $1 ; This is the only control handle we care about in this example so make sure to never overwrite it! 
${NSD_CB_AddString} $1 "Foo" 
${NSD_CB_AddString} $1 "Bar" 
SendMessage $1 ${CB_SETCURSEL} 0 "" 
${NSD_OnChange} $1 OnComboChange 

${NSD_CreateButton} 0 50u 33% 12u "Emulate change: A" 
Pop $0 
${NSD_OnClick} $0 EmulateChangeMethodA 
${NSD_CreateButton} 33% 50u 33% 12u "Emulate change: B" 
Pop $0 
${NSD_OnClick} $0 EmulateChangeMethodB 
${NSD_CreateButton} 66% 50u 33% 12u "Emulate change: C" 
Pop $0 
${NSD_OnClick} $0 EmulateChangeMethodC 

nsDialogs::Show 
FunctionEnd