middle mouse button

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kotyara
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Joined: Fri Sep 04, 2020 11:06 am

middle mouse button

Post by kotyara »

How to assign your own action to the middle mouse button click?
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salvadordf
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Re: middle mouse button

Post by salvadordf »

If you're using a browser in "normal" mode then try intercepting the Windows message using the TChromium.OnRenderCompMsg event.

If your application uses the OSR mode then all you have to do is implement your code in the OnMouseUp or OnMouseDown events of the buffer panel.
kotyara
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Re: middle mouse button

Post by kotyara »

How do I know which Chromium triggered this event?
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salvadordf
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Re: middle mouse button

Post by salvadordf »

In case of OSR browsers you should have a one to one relation between a buffer panel and a TCromium component.
If you get a OnMouseDown event in that buffer panel then you know it's related to the only browser using that panel.
kotyara
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Re: middle mouse button

Post by kotyara »

I'm trying to do this:

Code: Select all

Chromium->OnRenderCompMsg = RenderCompMsg;

Code: Select all

void __fastcall TForm1::RenderCompMsg(Winapi::Messages::TMessage &aMessage, bool &aHandled){
	if(aMessage.Msg==WM_MBUTTONDOWN){
		aHandled = true;
		// ??? 
	}
}
But I don't understand how to understand what Chromium it caused =(
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salvadordf
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Re: middle mouse button

Post by salvadordf »

Sorry. I though you were using the OSR mode.

In normal mode you would assign a different procedure to handle the OnRenderCompMsg event of each browser.
I see now that I should add a "Sender" parameter to those events to make this easier.
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salvadordf
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Re: middle mouse button

Post by salvadordf »

Please, download CEF4Delphi again from GitHub.

I just uploaded a new CEF4Delphi version and now all TChromium events have a "Sender" parameter, including "OnRenderCompMsg".

Use "Sender" like this to know which browser triggered that event :

Code: Select all

TChromium(Sender).BrowserId
Each browser has a unique "BrowserId" property.
kotyara
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Joined: Fri Sep 04, 2020 11:06 am

Re: middle mouse button

Post by kotyara »

Thank you very much.
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