code: drawterm

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win32: fix scrolling, add pageup/down/home/end keys

--- a/gui-win32/screen.c

+++ b/gui-win32/screen.c

@@ -330,6 +330,8 @@

 	int i;

 	Rectangle r;

+	b = 0;

+

 	switch(msg) {

 	case WM_CREATE:

 		break;

@@ -342,9 +344,10 @@

 		return DefWindowProc(hwnd, msg, wparam, lparam);

 	case WM_MOUSEWHEEL:

 		if ((int)(wparam & 0xFFFF0000)>0)

-			b|=8;

+			b |=8;

 		else

-			b|=16;

+			b |=16;

+		// fallthrough

 	case WM_MOUSEMOVE:

 	case WM_LBUTTONUP:

 	case WM_MBUTTONUP:

@@ -354,9 +357,8 @@

 	case WM_RBUTTONDOWN:

 		x = LOWORD(lparam);

 		y = HIWORD(lparam);

-		b = 0;

 		if(wparam & MK_LBUTTON)

-			b = 1;

+			b |= 1;

 		if(wparam & MK_MBUTTON)

 			b |= 2;

 		if(wparam & MK_RBUTTON) {

@@ -428,6 +430,18 @@

 			break;

 		case VK_RIGHT:

 			kbdputc(kbdq, Kright);

+			break;

+		case VK_HOME:

+			kbdputc(kbdq, Khome);

+			break;

+		case VK_END:

+			kbdputc(kbdq, Kend);

+			break;

+		case VK_PRIOR:

+			kbdputc(kbdq, Kpgup);

+			break;

+		case VK_NEXT:

+			kbdputc(kbdq, Kpgdown);

 			break;

 		}

 		break;