inno-setup - 在 Chromium Embedded 3 (DCEF3) 中禁用上下文菜单

Question

我试图在 Chromium Embedded (DCEF3) 的窗口中禁用鼠标右键(上下文菜单)，但我没有得到，我没有找到任何本地执行此操作的设置。

例如，我可以禁用“查看源代码”，我正在使用下面的代码，但我真正想要的是禁用上下文菜单，或者不希望它出现。

注意:我在 DLL "Chromium.dll"中使用它，这是一个与 "Inno Setup"一起使用的库，相当于 Inno Web Brower。

procedure TInnoChromium.OnContextMenuCommand(Sender: TObject;
  const browser: ICefBrowser; const frame: ICefFrame;
  const params: ICefContextMenuParams; commandId: Integer;
  eventFlags: TCefEventFlags; out Result: Boolean);
begin
if (commandId = 132) then Result := True; // MENU_ID_VIEW_SOURCE
end;

Answer 1

要在 DCEF 3 中禁用上下文菜单，您需要处理 OnBeforeContextMenu 事件并清除其 model范围。这就是引用文献所说的(我强调):

OnBeforeContextMenu

Called before a context menu is displayed. |params| provides information about the context menu state. |model| initially contains the default context menu. The |model| can be cleared to show no context menu or modified to show a custom menu. Do not keep references to |params| or |model| outside of this callback.

因此，要完全禁用上下文菜单，您将编写如下内容:

uses
  cefvcl, ceflib;

type
  TInnoChromium = class
  ...
  private
    FChromium: TChromium;
    procedure BeforeContextMenu(Sender: TObject; const browser: ICefBrowser;
      const frame: ICefFrame;
  public
    constructor Create;
  end;

implementation

constructor TInnoChromium.Create;
begin
  FChromium := TChromium.Create(nil);
  ...
  FChromium.OnBeforeContextMenu := BeforeContextMenu;
end;

procedure TInnoChromium.BeforeContextMenu(Sender: TObject; const browser: ICefBrowser;
  const frame: ICefFrame; const params: ICefContextMenuParams; const model: ICefMenuModel);
begin
  // to disable the context menu clear the model parameter
  model.Clear;
end;