Question

我需要删除为控件创建的工具提示窗口，该控件将在主窗口停留时被删除。我想出了下面的内容，但是找不到任何TOOLTIPS_CLASS窗口。有什么原因吗？

TIA !!

  for (HWND hwndtip=NULL; (hwndtip=FindWindowEx(hwnd, hwndtip, TOOLTIPS_CLASS, NULL))!=NULL;) {
    // check if it has the control id we want
    TOOLINFO toolinfo ={ 0 };
    toolinfo.cbSize = sizeof(toolinfo);
    toolinfo.hwnd = hwnd;
    toolinfo.uFlags = TTF_IDISHWND;
    toolinfo.uId = (UINT_PTR)hwndctl;
    if (SendMessage(hwndtip, TTM_GETTOOLINFO, 0, (LPARAM)&toolinfo)) {
      // found tooltip to delete
      DestroyWindow(hwndtip);
      result=TRUE;
      break;
    }
  }

Answer 1

好的，我发现了一种通过将TTM_GETTOOLINFO发送到找到的每个工具提示窗口而不会崩溃的方法。基本上，为您创建的工具提示窗口命名。例如，_T（“ MINE !!”）然后找到它：

public class FavoritableCellEditor extends AbstractCellEditor implements TableCellEditor {

private final FavoriteCheckBox cellEditor;

public FavoritableCellEditor() {
    cellEditor = new FavoriteCheckBox();
}

@Override
public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column) {
    if (value instanceof Boolean) {
        boolean selected = (boolean) value;
        cellEditor.setSelected(selected);
    }
    return cellEditor;
}

@Override
public Object getCellEditorValue() {
    return cellEditor.isSelected();
}

}


public class FavoritableCheckboxRenderer extends FavoriteCheckBox implements TableCellRenderer {


@Override
public void setSelected(boolean selected) {
    super.setSelected(selected);
    if (selected) {
        setIcon(selIcon);
    } else {
        setIcon(unselIcon);
    }
}

@Override
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
    if (value instanceof Boolean) {
        boolean selected = (boolean) value;
        setSelected(selected);
    }
    return this;
}
}

public class FavoriteCheckBox extends JCheckBox {

    Icon selIcon;
    Icon unselIcon;

    public FavoriteCheckBox() {
        try {
            selIcon = new ImageIcon(ImageIO.read(getClass().getResource("/com/lmco/jsf/dqim/applications/TESTING/resources/baseline_star_black_18dp.png")));
            unselIcon = new ImageIcon(ImageIO.read(getClass().getResource("/com/lmco/jsf/dqim/applications/TESTING/resources/baseline_star_border_black_18dp.png")));
        } catch (IOException ex) {
            Logger.getLogger(FavoriteCheckBox.class.getName()).log(Level.SEVERE, null, ex);
        }
        setHorizontalAlignment(CENTER);
    }

    @Override
    public void setSelected(boolean selected) {
        super.setSelected(selected);
        if (selected) {
            setIcon(selIcon);
        } else {
            setIcon(unselIcon);
        }
        revalidate();
        repaint();
    }

}

为什么FindWindowEx找不到工具提示类

1 个答案: