--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/foosdk/sdk/libPPUI/CMiddleDragImpl.cpp	Mon Jan 05 02:15:46 2026 -0500
@@ -0,0 +1,101 @@
+#include "stdafx.h"
+#include "CMiddleDragImpl.h"
+#include "CMiddleDragLite.h"
+#include "ImplementOnFinalMessage.h"
+
+double CMiddleDragCommon::myPow(double p_val, double p_exp) {
+	if (p_val < 0) {
+		return -pow(-p_val, p_exp);
+	} else {
+		return pow(p_val, p_exp);
+	}
+}
+
+double CMiddleDragCommon::ProcessMiddleDragDeltaInternal(double p_delta) {
+	p_delta *= (double)KTimerPeriod / 25; /*originally calculated for 25ms timer interval*/
+	return myPow(p_delta * 0.05, 2.0);
+}
+
+double CMiddleDragCommon::radiusHelper(double p_x, double p_y) {
+	return sqrt(p_x * p_x + p_y * p_y);
+}
+int CMiddleDragCommon::mySGN(LONG v) {
+	if (v > 0) return 1;
+	else if (v < 0) return -1;
+	else return 0;
+}
+
+int32_t CMiddleDragCommon::Round(double val, double & acc) {
+	val += acc;
+	int32_t ret = (int32_t)floor(val + 0.5);
+	acc = val - ret;
+	return ret;
+}
+
+LONG CMiddleDragCommon::LineToPixelsHelper(LONG & p_overflow, LONG p_pixels, LONG p_dpi, LONG p_lineWidth) {
+	const int lineWidth = MulDiv(p_lineWidth, p_dpi, 96);
+	if (lineWidth == 0) return 0;
+	p_overflow += p_pixels;
+	LONG ret = p_overflow / lineWidth;
+	p_overflow -= ret * lineWidth;
+	return ret;
+}
+
+void CMiddleDragOverlay::ShowHere(CPoint pt) {
+
+	auto dpi = QueryScreenDPIEx(*this);
+	CSize size(MulDiv(32, dpi.cx, 96), MulDiv(32, dpi.cy, 96));
+	// Original path values are for 32x32, don't rescale for sizes close-enough
+	if (size.cx < 48) size.cx = 32;
+	if (size.cy < 48) size.cy = 32;
+	CPoint center(pt);
+	CPoint origin = center - CSize(size.cx / 2, size.cy / 2);
+	CRect rect(origin, origin + size);
+	this->SetWindowPos(HWND_TOPMOST, rect, SWP_SHOWWINDOW | SWP_NOACTIVATE);
+}
+
+namespace {
+	struct pt_t { uint8_t x, y; };
+	static CPoint transform(pt_t pt, CRect const& rc) {
+		return CPoint(rc.left + MulDiv(pt.x, rc.Width(), 32), rc.top + MulDiv(pt.y, rc.Height(), 32));
+	}
+}
+
+void CMiddleDragOverlay::Paint(CDCHandle dc) {
+	CRect client;
+	WIN32_OP_D(GetClientRect(&client));
+	static constexpr pt_t path[] = {
+		{15,0}, {9,6}, {9,7}, {14,7}, {14, 14},
+		{7, 14}, {7, 9}, {6, 9}, {0, 15},
+		{0, 16}, {6, 22}, {7, 22}, {7, 17}, {14, 17},
+		{14, 24}, {9, 24}, {9, 25}, {15, 31},
+		{16, 31}, {22, 25}, {22, 24}, {17, 24}, {17, 17},
+		{24, 17}, {24, 22}, {25, 22}, {31, 16},
+		{31, 15}, {25, 9}, {24, 9}, {24, 14}, {17, 14},
+		{17, 7}, {22, 7}, {22, 6}, {16, 0},
+	};
+
+	POINT points[std::size(path)];
+	for (size_t walk = 0; walk < std::size(path); ++walk) {
+		points[walk] = transform(path[walk], client);
+	}
+	CRgn rgn = CreatePolygonRgn(points, (int)std::size(path), WINDING);
+	PFC_ASSERT(rgn != NULL);
+	const HBRUSH brush = (HBRUSH)GetStockObject(DC_BRUSH);
+	dc.SetDCBrushColor(0);
+	dc.FillRgn(rgn, brush);
+	dc.SetDCBrushColor(0xFFFFFF);
+	dc.FrameRgn(rgn, brush, 1, 1);
+}
+
+
+namespace {
+	class CMiddleDragLiteBase : public CWindowImpl<CMiddleDragLiteBase, CWindow > {
+	public:
+		BOOL ProcessWindowMessage(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam, LRESULT& lResult, DWORD dwMsgMapID = 0) { return FALSE; }
+	};
+}
+void PP::addMiddleDragToCtrl(HWND wndCtrl) {
+	auto obj = new ImplementOnFinalMessage<CMiddleDragImpl<CMiddleDragWrapper< CMiddleDragLiteBase > > > ();
+	WIN32_OP_D( obj->SubclassWindow(wndCtrl) );
+}
\ No newline at end of file