src/Utils/LoadIconEx.cpp

   1 // TortoiseGit - a Windows shell extension for easy version control
   2
   3 // Copyright (C) 2018 - TortoiseGit
   4 // Copyright (C) 2018 - TortoiseSVN
   5
   6 // This program is free software; you can redistribute it and/or
   7 // modify it under the terms of the GNU General Public License
   8 // as published by the Free Software Foundation; either version 2
   9 // of the License, or (at your option) any later version.
  10
  11 // This program is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License
  17 // along with this program; if not, write to the Free Software Foundation,
  18 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19 //
  20
  21 #include "stdafx.h"
  22 #include "LoadIconEx.h"
  23 #include <CommCtrl.h>
  24
  25 #pragma comment(lib, "Comctl32.lib")
  26 #pragma comment(linker, "/manifestdependency:\"type='win32' name='Microsoft.Windows.Common-Controls' version='6.0.0.0' processorArchitecture='*' publicKeyToken='6595b64144ccf1df' language='*'\"")
  27
  28 HICON LoadIconEx(HINSTANCE hInstance, LPCWSTR lpIconName)
  29 {
  30         HICON hIcon = nullptr;
  31         if (FAILED(LoadIconWithScaleDown(hInstance, lpIconName, GetSystemMetrics(SM_CXSMICON), GetSystemMetrics(SM_CYSMICON), &hIcon)))
  32         {
  33                 // fallback, just in case
  34                 hIcon = LoadIcon(hInstance, lpIconName);
  35         }
  36         return hIcon;
  37 }
  38
  39 HICON LoadIconEx(HINSTANCE hInstance, LPCWSTR lpIconName, int iconWidth, int iconHeight)
  40 {
  41         // the docs for LoadIconWithScaleDown don't mention that a size of 0 will
  42         // use the default system icon size like for e.g. LoadImage or LoadIcon.
  43         // So we don't assume that this works but do it ourselves.
  44         if (iconWidth == 0)
  45                 iconWidth = GetSystemMetrics(SM_CXSMICON);
  46         if (iconHeight == 0)
  47                 iconHeight = GetSystemMetrics(SM_CYSMICON);
  48         HICON hIcon = nullptr;
  49         if (FAILED(LoadIconWithScaleDown(hInstance, lpIconName, iconWidth, iconHeight, &hIcon)))
  50         {
  51                 // fallback, just in case
  52                 hIcon = (HICON)LoadImage(hInstance, lpIconName, IMAGE_ICON, iconWidth, iconHeight, LR_DEFAULTCOLOR);
  53         }
  54         return hIcon;
  55 }