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+<!DOCTYPE html>
+<html lang="en">
+ <head>
+ <meta charset="utf-8">
+ <title>Qt Multiple Instances</title>
+ <script src="../testapp/testapp.js"></script>
+
+ <script>
+ // This example shows how to create two wasm instance from
+ // a shared wasm module. The module is downloaded and compiled
+ // once.
+
+ // This requires configuring Emscripten to use a custom instantiate
+ // function. This function then calls WebAssembly.instantiate() on
+ // the shared module object.
+
+ // Fetch and compile wasm module (once).
+ let module = WebAssembly.compileStreaming(fetch("../testapp/testapp.wasm"));
+
+ async function instantiateWasm(imports, successCallback) {
+ try {
+ let output = await WebAssembly.instantiate(await module, imports);
+ successCallback(output);
+ } catch (e) {
+ console.error(e);
+ }
+ return {};
+ }
+
+ async function instantiateApp(targetElement) {
+ let container = document.getElementById(targetElement);
+ let instance = await createQtAppInstance({
+ "qtContainerElements": [container],
+ "instantiateWasm": instantiateWasm,
+ });
+ container.style.visibility = "visible";
+ }
+
+ // Create instances at window load
+ window.addEventListener('load', () => {
+ instantiateApp("appcontainer1");
+ instantiateApp("appcontainer2");
+ })
+ </script>
+ </head>
+ <body>
+ <h1>Qt for WebAssembly: Multiple Instances</h1>
+
+ <p>This example shows how to create multiple application instances from
+ a single WebAssembly module. The WebAssembly binary is downloaded once,
+ and compiled to a module once.</p>
+
+ <p>The application windows will appear below, when loaded.</p>
+
+ <div id="appcontainer1" style="width:320px; height:200px; visibility:hidden"></div>
+ <p>Window below not showing? Upgrade to Qt >= 6.5.</p >
+ <div id="appcontainer2" style="width:320px; height:200px; visibility:hidden"></div>
+ </body>
+</html>
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