winamp/Src/Plugins/Encoder/enc_fhgaac/link_control.cpp

#include <windows.h>
#include "link_control.h"

static HCURSOR link_hand_cursor;
static LRESULT link_handlecursor(HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
	LRESULT ret = CallWindowProcW((WNDPROC)GetPropW(hwndDlg, L"link_proc"), hwndDlg, uMsg, wParam, lParam);
	// override the normal cursor behaviour so we have a hand to show it is a link
	if(uMsg == WM_SETCURSOR)
	{
		if((HWND)wParam == hwndDlg)
		{
			if(!link_hand_cursor)
			{
				link_hand_cursor = LoadCursor(NULL, IDC_HAND);
			}
			SetCursor(link_hand_cursor);
			return TRUE;
		}
	}
	return ret;
}

void link_startsubclass(HWND hwndDlg, UINT id){
HWND ctrl = GetDlgItem(hwndDlg, id);
	SetPropW(ctrl, L"link_proc",
			(HANDLE)(LONG_PTR)SetWindowLongPtrW(ctrl, GWLP_WNDPROC, (LONG_PTR)link_handlecursor));
}

void link_handledraw(HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
	if (uMsg == WM_DRAWITEM)
	{
		DRAWITEMSTRUCT *di = (DRAWITEMSTRUCT *)lParam;
		if (di->CtlType == ODT_BUTTON)
		{
			wchar_t wt[123] = {0};
			int y;
			RECT r;
			HPEN hPen, hOldPen;
			GetDlgItemTextW(hwndDlg, (INT)wParam, wt, 123);

			// draw text
			SetTextColor(di->hDC, (di->itemState & ODS_SELECTED) ? RGB(220, 0, 0) : RGB(0, 0, 220));
			r = di->rcItem;
			r.left += 2;
			DrawTextW(di->hDC, wt, -1, &r, DT_VCENTER | DT_SINGLELINE);

			memset(&r, 0, sizeof(r));
			DrawTextW(di->hDC, wt, -1, &r, DT_SINGLELINE | DT_CALCRECT);

			// draw underline
			y = di->rcItem.bottom - ((di->rcItem.bottom - di->rcItem.top) - (r.bottom - r.top)) / 2 - 1;
			hPen = CreatePen(PS_SOLID, 0, (di->itemState & ODS_SELECTED) ? RGB(220, 0, 0) : RGB(0, 0, 220));
			hOldPen = (HPEN) SelectObject(di->hDC, hPen);
			MoveToEx(di->hDC, di->rcItem.left + 2, y, NULL);
			LineTo(di->hDC, di->rcItem.right + 2 - ((di->rcItem.right - di->rcItem.left) - (r.right - r.left)), y);
			SelectObject(di->hDC, hOldPen);
			DeleteObject(hPen);

		}
	}
}