EDIT control will disappear when I clear the window using direct3d?

Question

first I created EDIT.

I use direct3d to BeginDraw and EndDraw then present the EDIT will disappear.

and If I use direct2d to do it .it will be ok.

why I can not use direct3d?

here is the project I create:https://github.com/ljzj2/testedit

Answer 1

Add a Manifest with, at end :

 <compatibility xmlns="urn:schemas-microsoft-com:compatibility.v1">
   <application>
     <!-- A list of the Windows versions that this application has been tested on and is
          is designed to work with. Uncomment the appropriate elements and Windows will 
          automatically selected the most compatible environment. -->

     <!-- Windows Vista -->
     <!--<supportedOS Id="{e2011457-1546-43c5-a5fe-008deee3d3f0}" />-->

     <!-- Windows 7 -->
     <!--<supportedOS Id="{35138b9a-5d96-4fbd-8e2d-a2440225f93a}" />-->

     <!-- Windows 8 -->
     <supportedOS Id="{4a2f28e3-53b9-4441-ba9c-d69d4a4a6e38}" />

     <!-- Windows 8.1 -->
     <supportedOS Id="{1f676c76-80e1-4239-95bb-83d0f6d0da78}" />

     <!-- Windows 10 -->
     <maxversiontested Id="10.0.19041.0"/>
     <supportedOS Id="{8e0f7a12-bfb3-4fe8-b9a5-48fd50a15a9a}" />

   </application>
 </compatibility>

Add WS_EX_LAYERED to Edit control :

HWND hTextBox = CreateWindowEx(WS_EX_CLIENTEDGE | WS_EX_LAYERED, L"EDIT", NULL, WS_CHILD | WS_VISIBLE | ES_AUTOHSCROLL | WS_BORDER, static_cast<int>(15), static_cast<int>(15), static_cast<int>(130), static_cast<int>(30), hwnd, (HMENU)50, (HINSTANCE)GetWindowLongPtr(hwnd, GWLP_HINSTANCE), NULL);
SetOpacity(hTextBox, 100);

with

void SetOpacity(HWND hWnd, int nOpacity)
{
	SetLayeredWindowAttributes(hWnd, 0, (byte)(255 * nOpacity / 100), LWA_ALPHA);
}

Then it will appear :