[reactos] 01/01: [WIN32SS][WINSRV] Optimize console background drawing (#2132)

[Katayama Hirofumi MZ]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=1dcdb4c2d0298ee71822c1...

commit 1dcdb4c2d0298ee71822c1d432a30604a82bbd21
Author:     Katayama Hirofumi MZ [e-mail]
AuthorDate: Thu Dec 5 20:19:00 2019 +0900
Commit:     GitHub [e-mail]
CommitDate: Thu Dec 5 20:19:00 2019 +0900

[WIN32SS][WINSRV] Optimize console background drawing (#2132)

Console needs speed. This PR will optimize drawing of console.
    - Set NULL to the background brush.
    - Skip WM_ERASEBKGND.
---
 win32ss/user/winsrv/consrv/frontends/gui/conwnd.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/win32ss/user/winsrv/consrv/frontends/gui/conwnd.c b/win32ss/user/winsrv/consrv/frontends/gui/conwnd.c
index 0d81e1d58b5..7676a99c22b 100644
--- a/win32ss/user/winsrv/consrv/frontends/gui/conwnd.c
+++ b/win32ss/user/winsrv/consrv/frontends/gui/conwnd.c
@@ -149,7 +149,7 @@ RegisterConWndClass(IN HINSTANCE hInstance)
     WndClass.hIcon = ghDefaultIcon;
     WndClass.hIconSm = ghDefaultIconSm;
     WndClass.hCursor = ghDefaultCursor;
-    WndClass.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH); // The color of a terminal when it is switched off.
+    WndClass.hbrBackground = NULL;
     WndClass.lpszMenuName = NULL;
     WndClass.cbClsExtra = 0;
     WndClass.cbWndExtra = GWLP_CONWND_ALLOC;
@@ -2214,6 +2214,9 @@ ConWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
             if (OnClose(GuiData)) goto Default;
             break;

+        case WM_ERASEBKGND:
+            return TRUE;
+
         case WM_PAINT:
             OnPaint(GuiData);
             break;