From a8baf36477195b9a3cc4726180378c8afa9336b3 Mon Sep 17 00:00:00 2001
From: NishiOwO <nishi@nishi.boats>
Date: Wed, 1 Oct 2025 06:47:08 +0000
Subject: [PATCH] better rendering

git-svn-id: http://svn2.nishi.boats/svn/milsko/trunk@99 b9cfdab3-6d41-4d17-bbe4-086880011989
---
 include/Mw/GDI.h |  2 +-
 src/gdi.c        | 35 +++++++++++++++++++++--------------
 2 files changed, 22 insertions(+), 15 deletions(-)

diff --git a/include/Mw/GDI.h b/include/Mw/GDI.h
index ce1a24c..a61c600 100644
--- a/include/Mw/GDI.h
+++ b/include/Mw/GDI.h
@@ -17,7 +17,7 @@ struct _MwLL {
 	HWND  hWnd;
 	HDC   hDC;
 	void* user;
-	int copy_buffer;
+	int   copy_buffer;
 
 	MwLLHandler handler;
 };
diff --git a/src/gdi.c b/src/gdi.c
index c422f9a..c9f323a 100644
--- a/src/gdi.c
+++ b/src/gdi.c
@@ -17,23 +17,29 @@ static LRESULT CALLBACK wndproc(HWND hWnd, UINT msg, WPARAM wp, LPARAM lp) {
 		HBITMAP	    hbmp;
 		HDC	    dc, hbdc;
 
-		GetClientRect(hWnd, &rc);
+		if(u->ll->copy_buffer) {
+			GetClientRect(hWnd, &rc);
 
-		dc   = GetDC(hWnd);
-		hbmp = CreateCompatibleBitmap(dc, rc.right - rc.left, rc.bottom - rc.top);
-		hbdc = CreateCompatibleDC(dc);
-		SelectObject(hbdc, hbmp);
-		ReleaseDC(hWnd, dc);
+			dc   = GetDC(hWnd);
+			hbmp = CreateCompatibleBitmap(dc, rc.right - rc.left, rc.bottom - rc.top);
+			hbdc = CreateCompatibleDC(dc);
+			SelectObject(hbdc, hbmp);
+			ReleaseDC(hWnd, dc);
 
-		u->ll->hDC = hbdc;
-		MwLLDispatch(u->ll, draw);
+			u->ll->hDC = hbdc;
+			MwLLDispatch(u->ll, draw);
 
-		dc = BeginPaint(hWnd, &ps);
-		StretchBlt(dc, 0, 0, rc.right - rc.left, rc.bottom - rc.top, hbdc, 0, 0, rc.right - rc.left, rc.bottom - rc.top, SRCCOPY);
-		EndPaint(hWnd, &ps);
+			dc = BeginPaint(hWnd, &ps);
+			StretchBlt(dc, 0, 0, rc.right - rc.left, rc.bottom - rc.top, hbdc, 0, 0, rc.right - rc.left, rc.bottom - rc.top, SRCCOPY);
+			EndPaint(hWnd, &ps);
 
-		DeleteDC(hbdc);
-		DeleteObject(hbmp);
+			DeleteDC(hbdc);
+			DeleteObject(hbmp);
+		} else {
+			u->ll->hDC = BeginPaint(hWnd, &ps);
+			MwLLDispatch(u->ll, draw);
+			EndPaint(hWnd, &ps);
+		}
 	} else if(msg == WM_LBUTTONDOWN) {
 		SetCapture(hWnd);
 		MwLLDispatch(u->ll, down);
@@ -82,7 +88,8 @@ MwLL MwLLCreate(MwLL parent, int x, int y, int width, int height) {
 
 	RegisterClassEx(&wc);
 
-	r->hWnd = CreateWindow(parent == NULL ? "milsko" : "STATIC", "Milsko", parent == NULL ? (WS_OVERLAPPEDWINDOW) : (WS_CHILD | WS_VISIBLE), x, y, width, height, parent == NULL ? NULL : parent->hWnd, 0, wc.hInstance, NULL);
+	r->copy_buffer = 1;
+	r->hWnd	       = CreateWindow(parent == NULL ? "milsko" : "STATIC", "Milsko", parent == NULL ? (WS_OVERLAPPEDWINDOW) : (WS_CHILD | WS_VISIBLE), x, y, width, height, parent == NULL ? NULL : parent->hWnd, 0, wc.hInstance, NULL);
 
 	u->ll = r;
 	if(parent == NULL) {