从dll文件提取图标

!include nsDialogs.nsh

Page Custom MyIconPage

!define /IfNDef LOAD_LIBRARY_AS_DATAFILE 2
!define /IfNDef LR_DEFAULTSIZE 0x0040
!define /IfNDef SHGFI_ADDOVERLAYS 0x000000020
!define /IfNDef SHGFI_ICON 0x000000100
!define /IfNDef SHGFI_USEFILEATTRIBUTES 0x000000010
!if "${NSIS_CHAR_SIZE}" > 1
!define /redef /math SHFILEINFO_SIZE ${NSIS_PTR_SIZE} + 688
!else
!define /redef /math SHFILEINFO_SIZE ${NSIS_PTR_SIZE} + 348
!endif
!define /IfNDef SIID_DRIVEFIXED 8

Var hIcoByIndex
Var hIcoByResId
Var hIcoForSpecificDrive
Var hIcoForGenericDrive

Function MyIconPage
nsDialogs::Create 1018
Pop $0

${NSD_CreateIcon} 0 0u 20u 20u ''
Pop $1
System::Call 'SHELL32::ExtractIcon(p0, t "$SysDir\SHELL32.dll", i 8)p.s'
Pop $hIcoByIndex
SendMessage $1 ${STM_SETIMAGE} ${IMAGE_ICON} $hIcoByIndex

${NSD_CreateIcon} 50u 0u 20u 20u ''
Pop $1
System::Call 'KERNEL32::LoadLibraryEx(t "$SysDir\SHELL32.dll", p0, i${LOAD_LIBRARY_AS_DATAFILE})p.s'
System::Call 'USER32::LoadImage(pss, t "#9", i ${IMAGE_ICON}, i0, i0, i${LR_DEFAULTSIZE})p.s'
Pop $hIcoByResId
System::Call 'KERNEL32::FreeLibrary(ps)'
SendMessage $1 ${STM_SETIMAGE} ${IMAGE_ICON} $hIcoByResId
${NSD_CreateIcon} 200 20u 20u 20u ''
Pop $1
StrCpy $2 $SysDir 3 ; "c:\" probably
System::Call 'SHELL32::SHGetFileInfo(t"$2", i0, @r2, i ${SHFILEINFO_SIZE}, i${SHGFI_ICON}|${SHGFI_ADDOVERLAYS})p.r3'
${If} $3 P<> 0
System::Call '*$2(p.s)'
Pop $hIcoForSpecificDrive
${EndIf}
SendMessage $1 ${STM_SETIMAGE} ${IMAGE_ICON} $hIcoForSpecificDrive
${NSD_CreateIcon} 0 40u 20u 20u ''
Pop $1
System::Call 'USER32::GetClientRect(p0,@r2)'
System::Call '*$2(&l${NSIS_PTR_SIZE},p,i,i,&w260)'
System::Call 'SHELL32::SHGetStockIconInfo(i ${SIID_DRIVEFIXED}, i${SHGFI_ICON}, pr2)i.r3'
${If} $3 >= 0
${AndIf} $3 != "error"
System::Call '*$2(&i${NSIS_PTR_SIZE},p.s)'
Pop $hIcoForGenericDrive
${Else}
System::Call 'SHELL32::SHGetFileInfo(t"c:\", i0x10, @r2, i ${SHFILEINFO_SIZE}, i${SHGFI_ICON}|${SHGFI_USEFILEATTRIBUTES})p.r3'
${If} $3 P<> 0
System::Call '*$2(p.s)'
Pop $hIcoForGenericDrive
${EndIf}
${EndIf}
SendMessage $1 ${STM_SETIMAGE} ${IMAGE_ICON} $hIcoForGenericDrive
nsDialogs::Show
${NSD_FreeIcon} $hIcoByIndex
${NSD_FreeIcon} $hIcoByResId
${NSD_FreeIcon} $hIcoForSpecificDrive
${NSD_FreeIcon} $hIcoForGenericDrive
FunctionEnd

Section
nop
SectionEnd