I tried to capture a mouse event in my worker thread by changing
helloworld.cpp to the following:
#include <stdio.h>
#include <iostream>
#include <emscripten.h>
#include <html5.h>
using namespace std;
extern "C" {
EM_BOOL mouse_callback(int eventType, const EmscriptenMouseEvent *e, void*
userData)
{
cout << "mouse_callback+" << endl;
return 0;
}
}
int main() {
cout << "HelloWorld" << endl;
emscripten_set_click_callback(0,0,1, mouse_callback);
return 0;
}
I then change my build commands as follows to generate a html instead:
emcc helloworld.cpp --proxy-to-worker -s
EXPORTED_FUNCTIONS="['_mouse_callback', '_main']" -o helloworld.html
My mouse_callback was not triggered when I moved the mouse over the
browser. Does anyone know if I'm doing it correctly?
On Wednesday, August 26, 2015 at 2:59:13 PM UTC+8, awt wrote:
>
> Hi,
>
> I was trying to generate a javascript output for a simple hello world
> program and insert it into my own html file. These are my build commands:
>
> emcc helloworld.cpp --proxy-to-worker -o helloworld.js
>
> This is my helloworld.html file:
>
> <html>
> <header></header>
> <body>
> <script src="helloworld.js"></script>
> </body>
> </html>
>
> This is my cpp file:
>
> #include <stdio.h>
> #include <iostream>
>
> using namespace std;
> int main() {
> cout << "HelloWorld" << endl;
> return 0;
> }
>
> I get the following error:
> Uncaught ReferenceError: Module is not defined
>
> at the following line of code in helloworld.js:
>
> ['mousedown', 'mouseup', 'mousemove', 'DOMMouseScroll', 'mousewheel',
> 'mouseout'].forEach(function(event) {
> Module.canvas.addEventListener(event, function(event) {
> worker.postMessage({ target: 'canvas', event: cloneObject(event) });
> event.preventDefault();
> }, true);
>
> Do I need to manually declare the Module object in helloworld.html? Or
> should I just include helloworld.worker.js in helloworld.html directly?
>
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