Win32 App

[Jason Hullinger]

In Cocoa I have made a command line application that init's a WebView, then calls, stringByEvaluatingJavaScriptFromString, however, I'm trying to get this to work in Windows. I've compiled WebKit and added a new Win32 command line project, however, I'm always getting back "null" when calling stringByEvaluatingJavaScriptFromString. Below is the source, and I've tried a variety of different things to eval ("1 + 1", "var foo = 1", etc.), and again, it's always null.

 

Thanks for any information,

 

~/Jason Hullinger

 

src snippet:

 

int

_tmain(int argc, _TCHAR* argv[])

{

HRESULT hr;

hr = OleInitialize(NULL);

if(FAILED(hr)){

printf(

"failed to CoInit\n");

return -1;

}

IWebView *webView;

hr = CoCreateInstance(CLSID_WebView, 0, CLSCTX_ALL, IID_IWebView, (

void**)&webView);

if(FAILED(hr)){

printf(

"failed to create a webView\n");

return -1;

}

BSTR result = L

"";

BSTR script = L

"function hello(){ return 'hello'; } hello();";

webView->stringByEvaluatingJavaScriptFromString(script, &result);

printf(

"result: %S\nHit return to exit", result);

char temp[1024];

gets(temp);

return 0;

}

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[Ariya Hidayat-3]

> In Cocoa I have made a command line application that init's a WebView, then
> calls, stringByEvaluatingJavaScriptFromString, however, I'm trying to get
> this to work in Windows. I've compiled WebKit and added a new Win32 command
> line project, however, I'm always getting back "null" when calling
> stringByEvaluatingJavaScriptFromString. Below is the source, and I've tried
> a variety of different things to eval ("1 + 1", "var foo = 1", etc.), and
> again, it's always null.

Can't you use the debugger and single-step the function? Perhaps it returns
immediately due to some error or something like that.



--
Ariya Hidayat (ariya.hidayat@...)
Software Engineer, Qt Software, Nokia
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[Jason Hullinger]

(reply all this time)

 

Well, it looks like stringByEvaluatingJavaScriptFromString is calling: JSC::JSValue* scriptExecutionResult = coreFrame->loader()->executeScript(WebCore::String(script), true); The problem, I believe, is that coreFrame (an IWebFrame) is not set to a value because I'm not using an actual frame, or view of any kind. Does anyone know if there is a similar way as a Windows app to do the same as in Cocoa?
 
Thank much,

 

~/Jason Hullinger

On Mon, Sep 29, 2008 at 1:12 AM, Ariya Hidayat <ariya.hidayat@...> wrote:

> In Cocoa I have made a command line application that init's a WebView, then
> calls, stringByEvaluatingJavaScriptFromString, however, I'm trying to get
> this to work in Windows. I've compiled WebKit and added a new Win32 command
> line project, however, I'm always getting back "null" when calling
> stringByEvaluatingJavaScriptFromString. Below is the source, and I've tried
> a variety of different things to eval ("1 + 1", "var foo = 1", etc.), and
> again, it's always null.

Can't you use the debugger and single-step the function? Perhaps it returns
immediately due to some error or something like that.



--
Ariya Hidayat (ariya.hidayat@...)
Software Engineer, Qt Software, Nokia
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[Adam Roben]

On Sep 29, 2008, at 12:58 PM, Jason Hullinger wrote:

(reply all this time)

 

Well, it looks like stringByEvaluatingJavaScriptFromString is calling: JSC::JSValue* scriptExecutionResult = coreFrame->loader()->executeScript(WebCore::String(script), true); The problem, I believe, is that coreFrame (an IWebFrame) is not set to a value because I'm not using an actual frame, or view of any kind. Does anyone know if there is a similar way as a Windows app to do the same as in Cocoa?

I think you may need to call IWebView::initWithFrame before stringByEvaluatingJavaScriptFromString will work. I'm surprised that isn't required on OS X as well.

-Adam

On Mon, Sep 29, 2008 at 1:12 AM, Ariya Hidayat <ariya.hidayat@...> wrote:

> In Cocoa I have made a command line application that init's a WebView, then
> calls, stringByEvaluatingJavaScriptFromString, however, I'm trying to get
> this to work in Windows. I've compiled WebKit and added a new Win32 command
> line project, however, I'm always getting back "null" when calling
> stringByEvaluatingJavaScriptFromString. Below is the source, and I've tried
> a variety of different things to eval ("1 + 1", "var foo = 1", etc.), and
> again, it's always null.

Can't you use the debugger and single-step the function? Perhaps it returns
immediately due to some error or something like that.



--
Ariya Hidayat (ariya.hidayat@...)
Software Engineer, Qt Software, Nokia
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[Jason Hullinger]

Yes, I guess that is the nicety of Objective-C and message passing.

I have tried to use initWithFrame with just a RECT set to {0, 0, 0, 0}, but it fails. I believe this is because it's not a RECT from an actual window, which is actually what I'm trying to get around using.

Would there be any other way to use WebKit's DOM parser without actually creating a new instance of window, and have access to the full browser DOM? I know I can eval JavaScript with base ECMAScript function's, but having a full browser DOM is what I'm trying to get.

Thanks much,

~/Jason Hullinger

On Tue, Sep 30, 2008 at 6:59 AM, Adam Roben <aroben@...> wrote:

On Sep 29, 2008, at 12:58 PM, Jason Hullinger wrote:

(reply all this time)

 

Well, it looks like stringByEvaluatingJavaScriptFromString is calling: JSC::JSValue* scriptExecutionResult = coreFrame->loader()->executeScript(WebCore::String(script), true); The problem, I believe, is that coreFrame (an IWebFrame) is not set to a value because I'm not using an actual frame, or view of any kind. Does anyone know if there is a similar way as a Windows app to do the same as in Cocoa?

I think you may need to call IWebView::initWithFrame before stringByEvaluatingJavaScriptFromString will work. I'm surprised that isn't required on OS X as well.

-Adam

On Mon, Sep 29, 2008 at 1:12 AM, Ariya Hidayat <ariya.hidayat@...> wrote:

> In Cocoa I have made a command line application that init's a WebView, then
> calls, stringByEvaluatingJavaScriptFromString, however, I'm trying to get
> this to work in Windows. I've compiled WebKit and added a new Win32 command
> line project, however, I'm always getting back "null" when calling
> stringByEvaluatingJavaScriptFromString. Below is the source, and I've tried
> a variety of different things to eval ("1 + 1", "var foo = 1", etc.), and
> again, it's always null.

Can't you use the debugger and single-step the function? Perhaps it returns
immediately due to some error or something like that.



--
Ariya Hidayat (ariya.hidayat@...)
Software Engineer, Qt Software, Nokia
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[Mark Rowe-5]

On Sep 30, 2008, at 6:59 AM, Adam Roben wrote:

> On Sep 29, 2008, at 12:58 PM, Jason Hullinger wrote:
>
>> (reply all this time)
>>
>> Well, it looks like stringByEvaluatingJavaScriptFromString is  
>> calling: JSC::JSValue* scriptExecutionResult = coreFrame->loader()-
>> >executeScript(WebCore::String(script), true); The problem, I  
>> believe, is that coreFrame (an IWebFrame) is not set to a value  
>> because I'm not using an actual frame, or view of any kind. Does  
>> anyone know if there is a similar way as a Windows app to do the  
>> same as in Cocoa?
>
> I think you may need to call IWebView::initWithFrame before  
> stringByEvaluatingJavaScriptFromString will work. I'm surprised that  
> isn't required on OS X as well.

It works on the Mac because when you allocate a WebView using  
[[WebView alloc] init], the NSView implementation of -init will call  
into -initWithFrame:.  If you *don't* call -init, you would need to  
call -initWithFrame: or -initWithFrame:frameName:groupName: on the  
WebView to initialize it before you could make use of it.

- Mark

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[Jason Hullinger]

So it does seem possible to initWithFrame with some sort of default values I assume? I've tried to initWithFrame({0, 0, 0, 0}, L"", L""); (or a RECT with the same values) , but it fails at run time.

Thanks,

~/Jason Hullinger

On Tue, Sep 30, 2008 at 1:44 PM, Mark Rowe <mrowe@...> wrote:

On Sep 30, 2008, at 6:59 AM, Adam Roben wrote:

On Sep 29, 2008, at 12:58 PM, Jason Hullinger wrote:

(reply all this time)

Well, it looks like stringByEvaluatingJavaScriptFromString is calling: JSC::JSValue* scriptExecutionResult = coreFrame->loader()->executeScript(WebCore::String(script), true); The problem, I believe, is that coreFrame (an IWebFrame) is not set to a value because I'm not using an actual frame, or view of any kind. Does anyone know if there is a similar way as a Windows app to do the same as in Cocoa?

I think you may need to call IWebView::initWithFrame before stringByEvaluatingJavaScriptFromString will work. I'm surprised that isn't required on OS X as well.

It works on the Mac because when you allocate a WebView using [[WebView alloc] init], the NSView implementation of -init will call into -initWithFrame:.  If you *don't* call -init, you would need to call -initWithFrame: or -initWithFrame:frameName:groupName: on the WebView to initialize it before you could make use of it.

- Mark

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[Mark Rowe-5]

On Sep 30, 2008, at 1:48 PM, Jason Hullinger wrote:

So it does seem possible to initWithFrame with some sort of default values I assume? I've tried to initWithFrame({0, 0, 0, 0}, L"", L""); (or a RECT with the same values) , but it fails at run time.

How exactly does it fail?  It's hard to know what is going wrong unless you provide more detailed information about the manner in which it is failing.

- Mark

On Tue, Sep 30, 2008 at 1:44 PM, Mark Rowe <mrowe@...> wrote:

On Sep 30, 2008, at 6:59 AM, Adam Roben wrote:

On Sep 29, 2008, at 12:58 PM, Jason Hullinger wrote:

(reply all this time)

Well, it looks like stringByEvaluatingJavaScriptFromString is calling: JSC::JSValue* scriptExecutionResult = coreFrame->loader()->executeScript(WebCore::String(script), true); The problem, I believe, is that coreFrame (an IWebFrame) is not set to a value because I'm not using an actual frame, or view of any kind. Does anyone know if there is a similar way as a Windows app to do the same as in Cocoa?

I think you may need to call IWebView::initWithFrame before stringByEvaluatingJavaScriptFromString will work. I'm surprised that isn't required on OS X as well.

It works on the Mac because when you allocate a WebView using [[WebView alloc] init], the NSView implementation of -init will call into -initWithFrame:.  If you *don't* call -init, you would need to call -initWithFrame: or -initWithFrame:frameName:groupName: on the WebView to initialize it before you could make use of it.

- Mark

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