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#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);
}
}
}
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