Failed to modify default installation path

[1758205847]

• Electron-Builder Version: 25.1.7

• Node Version: v18.20.4

• Electron Version:13.6.9
• Electron Type (current, beta, nightly):

• Target:

use StrCpy $INSTDIR 'xxx' ,but failed to change install dir.

When using StrCpy $INSTDIR 'xxxx' in customInit, using MessgeBox to output $INSTDIR is indeed modified successfully, but it is subsequently overwritten with the InstallLocation value in the registry.

use WriteRegExpandStr HKLM "${INSTALL_REGISTRY_KEY}" InstallLocation "C:\MyApp" ,got some problem

I tried to modify the installation path using the following method. This works, but it also creates a problem. That is, the registry was changed when the user canceled the installation, causing the previous installation to not be correctly uninstalled. Is there a callback that is triggered when the user cancels the installation. This will allow me to change the registry back within it.

!macro preInit
  SetRegView 64
  WriteRegExpandStr HKLM "${INSTALL_REGISTRY_KEY}" InstallLocation "C:\MyApp"
  WriteRegExpandStr HKCU "${INSTALL_REGISTRY_KEY}" InstallLocation "C:\MyApp"
  SetRegView 32
  WriteRegExpandStr HKLM "${INSTALL_REGISTRY_KEY}" InstallLocation "C:\MyApp"
  WriteRegExpandStr HKCU "${INSTALL_REGISTRY_KEY}" InstallLocation "C:\MyApp"
!macroend