I am trying to create a Rich-Text control on a Win32 application, but I uses Direct2D as the graphics. So I will re-implement such thing from the beginning. Note that standard edit control does not meet my requirements. What I am trying to do is: Communicate with IME Trigger/Hide IME dropdown Move the IME dropdown to a point Work with IME What I want to know is: Can we create a custom IME dropdown? Or we may only use existing IME dropdown? Of course, I have read Microsoft Learn: Input Method Manager , Using Input Method Editor in a Game I don't understand much about C++ and Win32 development, can I get simplified example of how to work with IME? Regards, @thebluetropics . A short note : The "IME dropdown" is refer to this stuff: The "IME dropdown" can also be referred as candidate window

How can I use Input Method Manager to work with IME?

thebluetropics 1,046

I am trying to create a Rich-Text control on a Win32 application, but I uses Direct2D as the graphics.
So I will re-implement such thing from the beginning. Note that standard edit control does not meet my requirements.

What I am trying to do is:

Communicate with IME
Trigger/Hide IME dropdown
Move the IME dropdown to a point
Work with IME

What I want to know is:

Can we create a custom IME dropdown? Or we may only use existing IME dropdown?

Of course, I have read Microsoft Learn: Input Method Manager, Using Input Method Editor in a Game

I don't understand much about C++ and Win32 development, can I get simplified example of how to work with IME?

Regards, @thebluetropics .

A short note: The "IME dropdown" is refer to this stuff:

The "IME dropdown" can also be referred as candidate window

Tong Xu - MSFT 2,201 Microsoft Vendor

I found out something about Windows IME/IMM Study.
It contains enough content to be comprehensive enough for your reference and use.

But I have the limitation that I can't quote unofficial.
Search in github keywords I've provided.

But the compilation development steps for IME are similar to the documentation you are talking about.
The API is combined with the IME window class.

BOOL WINAPI ImeInquire(LPIMEINFO lpImeInfo, LPTSTR lpszUIClass, LPCTSTR lpszOptions)  
{  
    
 if((DWORD_PTR)lpszOptions & IME_SYSINFO_WINLOGON )  
 return FALSE;  
  
  lpImeInfo->dwPrivateDataSize = 0; //sizeof(t_uiExtra);  
  
  lpImeInfo->fdwProperty  = IME_PROP_COMPLETE_ON_UNSELECT |   
    IME_PROP_SPECIAL_UI | IME_PROP_CANDLIST_START_FROM_1 |  
    IME_PROP_UNICODE | IME_PROP_KBD_CHAR_FIRST;                   
  
  lpImeInfo->fdwConversionCaps  = IME_CMODE_SYMBOL |   
    IME_CMODE_SOFTKBD | IME_CMODE_FULLSHAPE;                      
 lpImeInfo->fdwSentenceCaps    = IME_SMODE_NONE;                 
 lpImeInfo->fdwUICaps          = UI_CAP_SOFTKBD| UI_CAP_2700;  // UI  
 lpImeInfo->fdwSCSCaps = 0x00000000;  
 lpImeInfo->fdwSelectCaps = 0x00000000;  
  
   
  _tcscpy_s(lpszUIClass, MAX_CLASSNAME_UI, UIWnd::GetUIWndClassName());  
  
 return TRUE;  
}

thebluetropics 1,046 Reputation points

2022-10-24T10:14:19.517+00:00

@Tong Xu - MSFT

For some days, I am searching the entire MSDN for the clue of how can I work with IME in Win32 API. And today, I know that WM_IME_COMPOSITION is called several times when I type something.

I just want to say, Thank you very much for the reference!
I was surprised that the useful resource is available on Github, and not on the Microsoft Learn...
thebluetropics 1,046 Reputation points

2022-10-24T11:05:41.223+00:00

Why it is so hard to work with IME in Win32 API, that even we require to "study" it?

"study" here is a deep study (like developing a vaccine for covid-19).

I can learn about basics of Windows and Win32 API programming in a short amount of time (2 weeks, 2-12 hours a day)
Tong Xu - MSFT 2,201 Reputation points Microsoft Vendor

2022-10-25T02:38:01.22+00:00

In fact, it is recommended to check the Microsoft documentation first, most of which have detailed descriptions of the relevant APIs and provide code examples.

Some of GitHub's projects are written by others, and they are indeed finished products, but there is no detailed explanation, and the security is yet to be verified.、

Windows APIs are the underlying framework stuff, some APIs may already exist when Microsoft made Windows operating system .Including some Windows 11 development is also dependent on APIs. Developers have thought about this for a long time, and in order to include all aspects, this leads to a huge number of APIs, and cumbersome. But they are advanced.

IME APIs may be developed less frequently, so there is less relevant experience and products, so it is difficult to develop.

Tong Xu - MSFT 2,201 Microsoft Vendor

and

BOOL WINAPI ImeConfigure(HKL hkl, HWND hWnd, DWORD dwMode, LPVOID lpData)  
{  
 // exec config  
 return TRUE;  
}  
  
LRESULT WINAPI ImeEscape(HIMC hImc, UINT nSub, LPVOID lpData)  
{  
 switch (nSub)  
 {  
 case IME_ESC_QUERY_SUPPORT:  
 case IME_ESC_RESERVED_LAST:               
 case IME_ESC_RESERVED_FIRST:              
 case IME_ESC_PRIVATE_FIRST:               
 case IME_ESC_PRIVATE_LAST:                
 case IME_ESC_SEQUENCE_TO_INTERNAL:  
 case IME_ESC_GET_EUDC_DICTIONARY:  
 case IME_ESC_SET_EUDC_DICTIONARY:  
 case IME_ESC_MAX_KEY:  
 case IME_ESC_SYNC_HOTKEY:  
 case IME_ESC_HANJA_MODE:  
 case IME_ESC_GETHELPFILENAME:  
 case IME_ESC_PRIVATE_HOTKEY:  
 break; //not support  
 case IME_ESC_IME_NAME:  
 {  
 LPTSTR szData = (LPTSTR)lpData;  
 _tcscpy_s(szData, 16, _T("XXIme")); //for win98: less than 16*sizeof(TCHAR)  
 return TRUE;  
 }  
 break;              
 }  
 return FALSE;  
}

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How can I use Input Method Manager to work with IME?