在使用MFC将图像显示到另一个对话框中发现问题 [英] Find problem in displaying an image to another dialog using MFC

问题描述

我在对话(图像分析仪)上做了一个按钮(彩色滤光片).当我单击此按钮时，将打开一个新对话框(滤色器).它具有三个单选按钮和确定按钮.当我选择一个单选按钮并单击确定时，它在同一对话框中显示图像，但是我希望当我单击确定按钮时，该对话框将关闭并且该图像将显示在dialog(image analyser)上.那我该怎么办呢?

图像分析器n滤色镜r名称.
这是我的确定按钮代码

i have made a button(color filter) on a dialogue(image analyser). when i click on this a new dialog(color filter) opens. it has three radio buttons and ok button. when i select one of the radio buttons and click on ok, it displays the image on the same dialog but i want that when i click on ok button the dialog will close and the image will display on dialog(image analyser). so wht should i do for this?

image analyser n color filter r names.
this my ok button code

void CColourDlg::OnBnClickedButton1()
{
    // TODO: Add your control notification handler code here
    UpdateData(TRUE);
    CBitmap img;
  CDC dc;
  BITMAP bmp;
  img.LoadBitmapW(IDB_BITMAP1);
  img.GetBitmap(&bmp);
  CDC* pDC = this->GetDC();
  dc.CreateCompatibleDC(pDC);
  CBitmap* pOld = dc.SelectObject(&img);
  for(int y = 0; y BitBlt(200, 200, bmp.bmWidth, bmp.bmHeight, &dc, 0, 0, SRCCOPY);
  dc.SelectObject(pOld);
}

等待您的回复...........

waiting for ur reply...........

推荐答案

在滤色器按钮上单击处理程序，添加代码以将滤色器对话框显示为模态;然后在滤色器对话框调用EndDialog(IDOK)的确定"按钮上单击处理程序，然后在滤色器按钮上单击处理程序，显示修改后的位图:

On the color filter button click handler, add code to show the color filter dialog as modal; then on the OK button click handler of your color filter dialog call EndDialog(IDOK), and back on the filter button click handler show the modiied bitmap:

// On your color filter dialog
class CFilterDialog
{
public:
   int m_iSelection; // Ths will get the selected radio button index (0, 1, ...)

protected:
   void DoDataExchange(CDataExchange* pDX)
   {
      CDialog::DoDataExchange(pDX);

      // Replace IDC_FIRST_RADIO_IN_TAB_ORDER with the ID of your first radio button
      DDX_Radio(pDX, IDC_FIRST_RADIO_IN_TAB_ORDER, m_iSelection);
   }

   virtual void OnOK()
   {
      UpdateData(TRUE); // This will update m_iSelection basing on the UI state
      // If no radio button is selected m_iSelected is -1 then avoid closing the dialog
      if (m_iSelection >= 0) EndDialog(IDOK); // This will close the dialog
   }
};

// On your image analyser class
void CColorAnalyser::OnColorFilterButtonClick()
{
   CFilterDialog dlg(this);

   // If you want to select one of the radio boxes as default add the following line:
   dlg.m_iSelection = 0; // 0 for the first radio button, 1 for the second and so on...

   if (dlg.DoModal() == IDOK)
   {
      switch (dlg.m_iSelection)
      {
      case 0:
         // The first radio button has been choosen
         break;

      case 1:
         // The second radio button has been choosen
         break;

      ...
      }
   }
}

如果要在单击确定"按钮时关闭对话框，只需更改
此OK按钮的ID为IDOK.(不要忘记在按钮单击代码上调用CDialog :: OnOk().)

if you want to close dialog when clicking ok button just change
ID of this OK button to IDOK.( don''t forget to call CDialog::OnOk() on button click code).

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