initial: nsSplashPNG plugin 1.0.0

examples/example_nonblocking.nsi

@@ -0,0 +1,34 @@
+; Test non-blocking behavior
+Unicode true
+!addplugindir "N:\Code\Workspace\Launchers\plugins\x86-unicode"
+
+Name "Non-Blocking Test"
+OutFile "test_nonblocking.exe"
+SilentInstall silent
+RequestExecutionLevel user
+
+Function .onInit
+    SetOutPath $TEMP
+    File "images\splash.png"
+    
+    ; Show splash with fade-in, manual close (0 timeout)
+    ; CRITICAL: /NOUNLOAD required since we call stop() later
+    MessageBox MB_OK "Showing splash with fade-in. Script should continue immediately after fade-in completes."
+    nssplashpng::show /NOUNLOAD 0 /FADEIN "$TEMP\splash.png"
+    Pop $0
+    
+    ; This should appear right after fade-in, while splash is still visible
+    MessageBox MB_OK "Splash is visible! Result: $0$\n$\nNow doing some work..."
+    Sleep 2000
+    
+    MessageBox MB_OK "Work done. Now closing splash with fade-out..."
+    nssplashpng::stop /FADEOUT
+    Pop $0
+    
+    MessageBox MB_OK "Splash closed! Stop result: $0"
+    Delete "$TEMP\splash.png"
+    Quit
+FunctionEnd
+
+Section
+SectionEnd