WPF - Improve Mouse Click Count

[mountrivers]

• What version of the product are you using?
  Build from branch 4664

• What architecture x86 or x64?
  x64

• What version of .Net?
  .Net 4.6.1

• On what operating system?
  win 10

• Are you using WinForms, WPF or OffScreen?
  WPF

• What steps will reproduce the problem?
  Just click anything more than 4 times like double click

• Please provide any additional information below.

[1231/124738.468:FATAL:event.cc(601)] Check failed: 3 >= click_count (3 vs.  4)

[amaitland]

What version of the product are you using?
Build from branch 4664

Are you using an official release? If so what is the exact version. If you've built a custom version does the problem reproduce with an official release?

Please test with https://github.com/cefsharp/CefSharp.MinimalExample

[mountrivers]

i was using build with debug64. But after I use release64 the problem was solved

[amaitland]

A quick look at the Chromium source and it appears you were hitting the DCHECK at https://source.chromium.org/chromium/chromium/src/+/main:ui/events/event.cc;l=600

The upstream documentation for SendMouseClickEvent doesn't actually mention click_count. Looking at the Chromium source and it would appear that only single, double and triple (1, 2, 3 respectively) are supported.

https://source.chromium.org/chromium/chromium/src/+/main:ui/events/event.h;l=540?q=SetClickCount&sq=&ss=chromium

Whilst it's only a DCHECK and won't ever crash in a release build I've updated to send click count of 1 of greater than 3. Potentially we could make further improvements if a valid use case presents itself.

i was using build with debug64

Debug builds should only be used for actual debugging of Chromium.