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L_DlgSetFont

Summary

Sets the font for the LEADTOOLS Common Dialogs.

Syntax

#include "l_bitmap.h"

L_LTDLG_API L_HFONT L_DlgSetFont(hFont)

Parameters

L_HFONT hFont

Handle to the selected font.

Returns

Value	Meaning
!NULL	The previous font.
NULL	An error occurred.

Comments

The default font is your systems default font.

Call this function with hFont set to NULL to use the default system font.

The hFont parameter will not be copied. You must insure that the hFont remains valid until it is no longer needed.

Required DLLs and Libraries

LTDLGKRN
LTKRN
For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application

Example

#define LT_DLG_SOLARIZE_IDDLG             1001 
#define LT_DLG_SOLARIZE_IDEDT_THRESHOLD   1002 
 
L_VOID EXT_CALLBACK DlgHelpCB(L_UINT32 uFlag, 
                              L_INT    nCtlID) 
{ 
   switch ( uFlag ) 
   { 
      case DLG_HELP_SOLARIZE: 
      { 
         switch (nCtlID ) 
         { 
            case LT_DLG_SOLARIZE_IDDLG: 
            case LT_DLG_SOLARIZE_IDEDT_THRESHOLD: 
               MessageBox (NULL, TEXT("Help with Solarize!"), TEXT("Help"), MB_OK); 
               break; 
 
            default: 
               break; 
         } 
         break ; 
      } 
   } 
} 
 
L_INT DlgSetFontExample(HWND hWnd,pBITMAPHANDLE pBitmap) 
{ 
   L_INT nRet; 
   HDC      hDC; 
   L_UINT   uLen; 
   HFONT    hMyFont = NULL; 
   L_TCHAR* pszString = NULL; 
   L_TCHAR  szNewCaption [] = TEXT("My New Solarize Caption"); 
 
   hDC = GetDC (NULL); 
 
   // set a custom font and string for the emboss dialog 
   // NOTE, you should change the font name to a font on your system 
   hMyFont = CreateFont ( - MulDiv (8, GetDeviceCaps(hDC, LOGPIXELSY), 72), 
                          0, 
                          0, 
                          0, 
                          FW_BOLD,  
                          FALSE,  
                          FALSE,  
                          FALSE, 
                          DEFAULT_CHARSET,  
                          OUT_DEFAULT_PRECIS,  
                          CLIP_DEFAULT_PRECIS, 
                          DEFAULT_QUALITY,  
                          DEFAULT_PITCH, 
                          TEXT("Bones")); 
 
   nRet = L_DlgInit ( DLG_INIT_COLOR ); 
   if(nRet != SUCCESS && nRet != ERROR_DLG_ALREADYINITIATED) 
      return nRet; 
   L_DlgSetFont (hMyFont); 
 
   // Get the default caption string 
   nRet = L_DlgGetStringLen ( DLG_SOLARIZE_IDSTR_CAPTION, &uLen ) ; 
   if(nRet != SUCCESS) 
      return nRet; 
 
   // add 1, for the terminating NULL 
   pszString = ( L_TCHAR* ) GlobalAlloc ( GMEM_FIXED, ( (uLen + 1) * sizeof ( L_TCHAR ) ) ) ;  
 
   nRet = L_DlgGetString ( DLG_SOLARIZE_IDSTR_CAPTION, pszString , uLen * sizeof ( L_TCHAR )) ; 
   if(nRet != SUCCESS) 
      return nRet; 
 
   // display default caption string 
   MessageBox ( hWnd, pszString, TEXT("Default"), MB_OK ) ; 
 
   GlobalFree ( pszString ) ; 
 
   // change caption string 
   nRet = L_DlgSetString ( DLG_SOLARIZE_IDSTR_CAPTION, szNewCaption ) ; 
   if(nRet != SUCCESS) 
      return nRet; 
 
   // now, display the dialog to see our changes 
   { 
      SOLARIZEDLGPARAMS DlgParams ;  
 
      memset ( &DlgParams, 0, sizeof ( SOLARIZEDLGPARAMS ) ) ; 
 
      DlgParams.uStructSize     = sizeof ( SOLARIZEDLGPARAMS ) ; 
      DlgParams.pBitmap         = pBitmap ; 
      DlgParams.pfnHelpCallback = ( LTCOMMDLGHELPCB ) DlgHelpCB ; 
      DlgParams.uDlgFlags       = DLG_SOLARIZE_AUTOPROCESS        | 
                                  DLG_SOLARIZE_SHOW_CONTEXTHELP   | 
                                  DLG_SOLARIZE_SHOW_PREVIEW       | 
                                  DLG_SOLARIZE_SHOW_TOOL_ZOOMLEVEL; 
 
      nRet = L_DlgSolarize ( hWnd, &DlgParams ) ; 
      if(nRet < 1) 
         return nRet; 
   } 
 
   L_DlgSetFont ( NULL ) ; 
   L_DlgFree () ; 
   DeleteObject ( hMyFont ) ; 
   ReleaseDC ( NULL, hDC ) ; 
   return SUCCESS; 
}