Unit DLU of resource editor

Optimized a few days ago ​ ​ The Three Kingdoms of wisdom and courage ​​​ The interface of , The goal is ： It's easy to operate , The message is clear . A little experience , Share with you , Also welcome your advice .CDC Class ( Such as ：TextOut) Is in pixels , The unit of the resource editor is not pixels , I didn't care . After the release of , There are a few users with chaotic page boards . I thought it was a problem of resolution , It's actually a matter of fonts . Song style small four DLU The unit is 2 Pixels , Song typeface small five DLU The unit is 1.5 Pixels .DLU What are the advantages of ？ Change the font in the resource editor , Dialog boxes and controls will change size , In this way, the layout will not be disordered . Set the user to big font , It won't mess . Extension of the problem , How to specify fonts by users ,SetFont Only change the font without changing the window size .
The solution is as follows ：

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       #include   <afxpriv.h> 
       
       
int CSanGuoDlg::DoModal() 
       
       
 {
       
       
  CDialogTemplate   dlt; 
       
       
  int   nResult; 
       
       
  if   (!dlt.Load(MAKEINTRESOURCE(IDD))) 
       
       
   return   -1; 
       
       
  dlt.SetFont( " Song style ",   9);  
       
       
  LPSTR   pdata   =   (LPSTR)GlobalLock(dlt.m_hTemplate); 
       
       
  m_lpszTemplateName   =   NULL; 
       
       
  InitModalIndirect(pdata);
       
       
  nResult   =   CDialog::DoModal();  
       
       
  //   unlock   memory   object 
       
       
  GlobalUnlock(dlt.m_hTemplate); 
       
       
  
       
       
  return   nResult;  
       
       
 }
      
      
      
      

       
       
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Knowledge point 1 , How to set big fonts .
stay windows Right click on
Click on “ attribute ”
open “ Set up ”Tab Label and click “ senior ”
stay “ routine ” label , The system changed in the font size box DPI
Restart the system

Knowledge point two ： How to find DLU Equal to how many pixels .
DLU One of the X The coordinate unit of the direction is equal to... Of the average width of the font used in the dialog box 1/4,Y The coordinate unit of the direction is equivalent to the height of the font used in the dialog box 1/8. Note that the average width of the font is not the average of all characters , It's the letters a…z（ Include capital ） Average width of , let me put it another way , It's equal to the string ”a…zA…Z” Divide the length of by 52.