64 lines
1.8 KiB
C++
64 lines
1.8 KiB
C++
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#include <windows.h>
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#include "link_control.h"
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static HCURSOR link_hand_cursor;
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static LRESULT link_handlecursor(HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lParam)
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{
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LRESULT ret = CallWindowProcW((WNDPROC)GetPropW(hwndDlg, L"link_proc"), hwndDlg, uMsg, wParam, lParam);
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// override the normal cursor behaviour so we have a hand to show it is a link
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if(uMsg == WM_SETCURSOR)
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{
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if((HWND)wParam == hwndDlg)
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{
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if(!link_hand_cursor)
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{
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link_hand_cursor = LoadCursor(NULL, IDC_HAND);
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}
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SetCursor(link_hand_cursor);
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return TRUE;
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}
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}
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return ret;
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}
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void link_startsubclass(HWND hwndDlg, UINT id){
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HWND ctrl = GetDlgItem(hwndDlg, id);
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SetPropW(ctrl, L"link_proc",
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(HANDLE)(LONG_PTR)SetWindowLongPtrW(ctrl, GWLP_WNDPROC, (LONG_PTR)link_handlecursor));
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}
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void link_handledraw(HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lParam)
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{
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if (uMsg == WM_DRAWITEM)
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{
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DRAWITEMSTRUCT *di = (DRAWITEMSTRUCT *)lParam;
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if (di->CtlType == ODT_BUTTON)
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{
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wchar_t wt[123] = {0};
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int y;
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RECT r;
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HPEN hPen, hOldPen;
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GetDlgItemTextW(hwndDlg, (INT)wParam, wt, 123);
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// draw text
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SetTextColor(di->hDC, (di->itemState & ODS_SELECTED) ? RGB(220, 0, 0) : RGB(0, 0, 220));
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r = di->rcItem;
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r.left += 2;
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DrawTextW(di->hDC, wt, -1, &r, DT_VCENTER | DT_SINGLELINE);
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memset(&r, 0, sizeof(r));
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DrawTextW(di->hDC, wt, -1, &r, DT_SINGLELINE | DT_CALCRECT);
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// draw underline
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y = di->rcItem.bottom - ((di->rcItem.bottom - di->rcItem.top) - (r.bottom - r.top)) / 2 - 1;
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hPen = CreatePen(PS_SOLID, 0, (di->itemState & ODS_SELECTED) ? RGB(220, 0, 0) : RGB(0, 0, 220));
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hOldPen = (HPEN) SelectObject(di->hDC, hPen);
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MoveToEx(di->hDC, di->rcItem.left + 2, y, NULL);
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LineTo(di->hDC, di->rcItem.right + 2 - ((di->rcItem.right - di->rcItem.left) - (r.right - r.left)), y);
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SelectObject(di->hDC, hOldPen);
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DeleteObject(hPen);
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}
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}
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}
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