CBaseDailog类保存自己的DPI

Author: zhongyang219

TrafficMonitor/BaseDialog.cpp

@@ -17,6 +17,7 @@ CBaseDialog::CBaseDialog(UINT nIDTemplate, CWnd* pParent /*=NULL*/)
     : CDialog(nIDTemplate, pParent)
 {
     m_nDialogID = nIDTemplate;
+    m_dpi = theApp.GetDpi();
 }
 
 CBaseDialog::~CBaseDialog()
@@ -133,6 +134,11 @@ void CBaseDialog::ReLoadLayoutResource()
     }
 }
 
+int CBaseDialog::DPI(int pixel) const
+{
+    return m_dpi * pixel / 96;
+}
+
 CRect CBaseDialog::GetTextExtent(const CString& text)
 {
     ASSERT(m_pDC != nullptr);   // m_pDC由OnInitDialog负责申请释放
@@ -293,9 +299,9 @@ BOOL CBaseDialog::OnInitDialog()
     font_info.size = 9;
     UINT dpi_x{}, dpi_y{};
     if (theApp.DPIFromRect(rect, &dpi_x, &dpi_y))
-        font_info.Create(m_dlg_font, dpi_x);
-    else
-        font_info.Create(m_dlg_font, theApp.GetDpi());
+        m_dpi = dpi_x;
+
+    font_info.Create(m_dlg_font, m_dpi);
 
     //获取初始时窗口的大小
     if (m_min_size.cx <= 0 || m_min_size.cy <= 0)

TrafficMonitor/BaseDialog.h

@@ -42,8 +42,11 @@ class CBaseDialog : public CDialog
     static std::map<CString, HWND> m_unique_hwnd;       //针对每一个基类的唯一的窗口句柄
     bool m_remember_dlg_size{ true };                   //是否记住窗口大小（当此标志为true且GetDialogName返回字符串不为空时会记住窗口大小）
     CFont m_dlg_font;
+    int m_dpi;              //窗口自己的DPI
 
 protected:
+    int DPI(int pixel) const;
+
     // 仅在InitializeControls期间可用，测量控件文本长度
     CRect GetTextExtent(const CString& text);
 

TrafficMonitor/SetItemOrderDlg.cpp

@@ -77,7 +77,7 @@ BOOL CSetItemOrderDlg::OnInitDialog()
     // TODO:  在此添加额外的初始化
     SetIcon(theApp.GetMenuIcon(IDI_ITEM), FALSE);		// 设置小图标
 
-    m_list_ctrl.SetItemHeight(0, theApp.DPI(20));
+    m_list_ctrl.SetItemHeight(0, DPI(20));
     EnableCtrl(-1);
     ShowItem();
 

TrafficMonitor/SkinDlg.cpp

@@ -90,8 +90,8 @@ CRect CSkinDlg::CalculateViewRect()
     m_preview_static.GetWindowRect(rect);		//获取“预览” group box 的位置
     ScreenToClient(&rect);
     CRect scroll_view_rect{ rect };
-    scroll_view_rect.DeflateRect(theApp.DPI(12), theApp.DPI(40));
-    scroll_view_rect.top = rect.top + theApp.DPI(28);
+    scroll_view_rect.DeflateRect(DPI(12), DPI(40));
+    scroll_view_rect.top = rect.top + DPI(28);
     return scroll_view_rect;
 }
 
@@ -114,7 +114,7 @@ BOOL CSkinDlg::OnInitDialog()
     // TODO:  在此添加额外的初始化
     SetIcon(theApp.GetMenuIcon(IDI_SKIN), FALSE);		// 设置小图标
     //初始化选择框
-    m_skin_list_box.SetItemHeight(0, theApp.DPI(18));
+    m_skin_list_box.SetItemHeight(0, DPI(18));
     for (const auto& skin_path : m_skins)
     {
         wstring skin_name;