Solve the problem that NetEase open source duilib comes with RichEdit and the keyboard cannot be input in some systems

phenomenon

Recently, duilib based on NetEase's open source maintenance has made a client. After it went online, users reported a series of problems. The strangest problem is that RichEdit sometimes cannot be input.

survey

After testing with the official example, it was found that there are also problems:

• NIM_Duilib_Framework
  

The XML of these two RichEdits are as follows:

<!-- 单行文本 -->
<RichEdit class="simple input" height="30" margin="0,3" padding="6,6,6" promptmode="true" prompttext="Single line text control" promptcolor="lightcolor"/>

<!-- 多行文本 -->
<RichEdit class="prompt" name="edit" bkcolor="bk_wnd_lightcolor" width="stretch" height="stretch" 
            multiline="true" vscrollbar="true" hscrollbar="true" autovscroll="true" 
            normaltextcolor="darkcolor" wantreturnmsg="true" rich="true"/>

Solution

After constantly changing the style test, there are 2 ways:

• Change the class="simple input" in the single-line text to class="input"
• The simple style is defined in global.xml, find the definition of simple in this file, and remove wanttab="false"

<Class name="simple" multiline="false" autohscroll="true" wantreturnmsg="true" rich="false" normaltextcolor="darkcolor" disabledtextcolor="textdefaultdisablecolor"/>
<!-- <Class name="simple" multiline="false" autohscroll="true" wantreturnmsg="true" wanttab="false" rich="false" normaltextcolor="darkcolor" disabledtextcolor="textdefaultdisablecolor"/> -->

Therefore, it is finally determined that there is a relationship with wanttab="false".

Follow-up question

After removing wanttab="false", I found that the user name and password input box, when pressing Tab when the user name, will append a \t tab instead of a new line , so I need to continue to solve it.

After carefully reading the relevant code of duilib after NetEase's modification, manually process it in RichEdit\t to wrap.

void RichEdit::OnChar(EventArgs& event)
{
    
    
	//TAB
	if (::GetKeyState(VK_TAB) < 0) {
    
    
		if (!m_bWantTab) {
    
    
			if (m_pWindow != NULL)
				m_pWindow->SendNotify((Control*)this, kEventTab);
			return;
		}

		// added_by [email protected] 2021-01-28 tab ignore
		// m_bWantTabEx是新增的属性，需要外部主动赋值。
		if (!m_bWantTabEx) {
    
    
			if (m_pWindow != NULL)
				m_pWindow->SetNextTabControl(::GetKeyState(VK_SHIFT) >= 0);
			return;
		}
	}
	//Number
	if (m_bNumberOnly) {
    
    
		if (event.wParam < '0' || event.wParam > '9')
			return;
	}

	TxSendMessage(WM_CHAR, event.wParam, event.lParam, NULL);
}

Assuming that the login interface is called LoginForm, in InitWindow, call SetWantTabEx (additional function added to solve the problem that some computers cannot input) to set it.

void LoginForm::InitWindow() {
    
    
	// ...
    passwd_ = static_cast<ui::RichEdit*>(FindControl(L"passwd"));
    ed_phone_ = static_cast<ui::RichEdit*>(FindControl(L"ed_phone"));
    ed_sms_ = static_cast<ui::RichEdit*>(FindControl(L"ed_sms"));

    // SetWantTabEx是新增的函数，自己可以在RichEdit.h中新增即可。
	ed_phone_->SetWantTabEx(false);
	passwd_->SetWantTabEx(false);
	ed_sms_->SetWantTabEx(false);
	
	// ...
}

postscript

The official website hasn't been updated for more than a year, and I have maintained all the problems found in the README.md of this branch. If you need it, please move:

• https://github.com/xmcy0011/NIM_Duilib_Framework