From a95e2d0e450be16f57658395e5a8ec7b36a23bf6 Mon Sep 17 00:00:00 2001
From: NishiOwO <nishi@nishi.boats>
Date: Wed, 1 Oct 2025 00:43:09 +0000
Subject: [PATCH] fix graphic bug

git-svn-id: http://svn2.nishi.boats/svn/milsko/trunk@85 b9cfdab3-6d41-4d17-bbe4-086880011989
---
 include/Mw/GDI.h |  1 +
 include/Mw/X11.h |  1 +
 src/gdi.c        | 11 +++++++----
 src/opengl.c     |  3 ++-
 src/x11.c        |  5 +++--
 5 files changed, 14 insertions(+), 7 deletions(-)

diff --git a/include/Mw/GDI.h b/include/Mw/GDI.h
index 0bf97a1..a61c600 100644
--- a/include/Mw/GDI.h
+++ b/include/Mw/GDI.h
@@ -17,6 +17,7 @@ struct _MwLL {
 	HWND  hWnd;
 	HDC   hDC;
 	void* user;
+	int   copy_buffer;
 
 	MwLLHandler handler;
 };
diff --git a/include/Mw/X11.h b/include/Mw/X11.h
index 709f6a1..3a0e961 100644
--- a/include/Mw/X11.h
+++ b/include/Mw/X11.h
@@ -24,6 +24,7 @@ struct _MwLL {
 	Colormap colormap;
 	void*	 user;
 	Atom	 wm_delete;
+	int	 copy_buffer;
 
 	unsigned int width;
 	unsigned int height;
diff --git a/src/gdi.c b/src/gdi.c
index c422f9a..7e695c7 100644
--- a/src/gdi.c
+++ b/src/gdi.c
@@ -28,9 +28,11 @@ static LRESULT CALLBACK wndproc(HWND hWnd, UINT msg, WPARAM wp, LPARAM lp) {
 		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);
+		if(u->ll->copy_buffer) {
+			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);
@@ -82,7 +84,8 @@ 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) {
diff --git a/src/opengl.c b/src/opengl.c
index 0cbfa2a..dc5b0ec 100644
--- a/src/opengl.c
+++ b/src/opengl.c
@@ -52,7 +52,8 @@ static void create(MwWidget handle) {
 	o->visual = glXChooseVisual(handle->lowlevel->display, DefaultScreen(handle->lowlevel->display), attribs);
 	o->gl	  = glXCreateContext(handle->lowlevel->display, o->visual, NULL, GL_TRUE);
 #endif
-	handle->internal = o;
+	handle->internal	      = o;
+	handle->lowlevel->copy_buffer = 0;
 
 	MwSetDefault(handle);
 }
diff --git a/src/x11.c b/src/x11.c
index 7b80ea4..808aec2 100644
--- a/src/x11.c
+++ b/src/x11.c
@@ -34,7 +34,8 @@ MwLL MwLLCreate(MwLL parent, int x, int y, int width, int height) {
 		r->display = parent->display;
 		p	   = parent->window;
 	}
-	r->window = XCreateSimpleWindow(r->display, p, x, y, width, height, 0, 0, WhitePixel(r->display, XDefaultScreen(r->display)));
+	r->window      = XCreateSimpleWindow(r->display, p, x, y, width, height, 0, 0, WhitePixel(r->display, XDefaultScreen(r->display)));
+	r->copy_buffer = 1;
 
 	r->width  = width;
 	r->height = height;
@@ -168,7 +169,7 @@ void MwLLNextEvent(MwLL handle) {
 			MwLLGetXYWH(handle, &x, &y, &w, &h);
 
 			MwLLDispatch(handle, draw);
-			XCopyArea(handle->display, handle->pixmap, handle->window, handle->gc, 0, 0, w, h, 0, 0);
+			if(handle->copy_buffer) XCopyArea(handle->display, handle->pixmap, handle->window, handle->gc, 0, 0, w, h, 0, 0);
 		}
 	}
 }