Function MapWndProc

outdated/sys/wince/mhmap.c:350–438

map window procedure */

/* map window procedure */
LRESULT CALLBACK
MapWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    PNHMapWindow data;
    int x, y;

    data = (PNHMapWindow) GetWindowLong(hWnd, GWL_USERDATA);
    switch (message) {
    case WM_CREATE:
        onCreate(hWnd, wParam, lParam);
        break;

    case WM_MSNH_COMMAND:
        onMSNHCommand(hWnd, wParam, lParam);
        break;

    case WM_PAINT:
        onPaint(hWnd);
        break;

    case WM_SETFOCUS:
        /* transfer focus back to the main window */
        SetFocus(GetNHApp()->hMainWnd);
        break;

    case WM_HSCROLL:
        onMSNH_HScroll(hWnd, wParam, lParam);
        break;

    case WM_VSCROLL:
        onMSNH_VScroll(hWnd, wParam, lParam);
        break;

    case WM_SIZE: {
        SIZE size;

        if (data->bFitToScreenMode) {
            size.cx = LOWORD(lParam);
            size.cy = HIWORD(lParam);
        } else {
            /* mapping factor is unchaged we just need to adjust scroll bars
             */
            size.cx = data->xScrTile * COLNO;
            size.cy = data->yScrTile * ROWNO;
        }
        mswin_map_stretch(hWnd, &size, TRUE);
    } break;

    case WM_LBUTTONDOWN:
        x = max(0, min(COLNO, data->xPos
                                  + (LOWORD(lParam) - data->map_orig.x)
                                        / data->xScrTile));
        y = max(0, min(ROWNO, data->yPos
                                  + (HIWORD(lParam) - data->map_orig.y)
                                        / data->yScrTile));

        NHEVENT_MS(CLICK_1, x, y);