How to realize hiding my app while sharing screen

[Wenchi]

Hello everyone！

Is there any way to hide my app windows while shareing screen？
eg：
view of who is sharing screen：

view of who is watching：

[Wenchi]

Finally I find a way to do that in Windows.

#pragma once

#include <windows.h>

#include "frameless_dialog.h"

/**
 * @brief 防止被截图的无边框对话框
 *        setResizeable(true)启用手动调整大小，setContentRemovable(true)启用内容区域可拖动
 */
class FramelessQDialogAntiCapture : public FramelessQDialog {
 public:
  FramelessQDialogAntiCapture(QWidget* parent = nullptr)
      : FramelessQDialog(parent) {
      SetWindowDisplayAffinity((HWND)(this->winId()), WDA_EXCLUDEFROMCAPTURE);
  }

 protected:
  virtual void showEvent(QShowEvent *e) override{
      SetWindowDisplayAffinity((HWND)(this->winId()), WDA_EXCLUDEFROMCAPTURE);
      FramelessQDialog::showEvent(e);
  }

  virtual void hideEvent(QHideEvent *e) override{
      SetWindowDisplayAffinity((HWND)(this->winId()), WDA_NONE);
      FramelessQDialog::hideEvent(e);
  }
};

[jsulm]

@Wenchi https://doc.qt.io/qt-6/qwidget.html#hide

[Kent-Dorfman]

no. RFB protocol simply copies the screen image memory to the other end as-is. RDP may have some facility to restrict what gets copied but that is well beyond the scope of this forum to discuss.

[Wenchi]

Finally I find a way to do that in Windows.

#pragma once

#include <windows.h>

#include "frameless_dialog.h"

/**
 * @brief 防止被截图的无边框对话框
 *        setResizeable(true)启用手动调整大小，setContentRemovable(true)启用内容区域可拖动
 */
class FramelessQDialogAntiCapture : public FramelessQDialog {
 public:
  FramelessQDialogAntiCapture(QWidget* parent = nullptr)
      : FramelessQDialog(parent) {
      SetWindowDisplayAffinity((HWND)(this->winId()), WDA_EXCLUDEFROMCAPTURE);
  }

 protected:
  virtual void showEvent(QShowEvent *e) override{
      SetWindowDisplayAffinity((HWND)(this->winId()), WDA_EXCLUDEFROMCAPTURE);
      FramelessQDialog::showEvent(e);
  }

  virtual void hideEvent(QHideEvent *e) override{
      SetWindowDisplayAffinity((HWND)(this->winId()), WDA_NONE);
      FramelessQDialog::hideEvent(e);
  }
};