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How to set icon on Notepad plus plus toolbar button?
type TToolbarIcons = record
  ToolbarBmp: HBITMAP;
  ToolbarIcon: HICON;
end;

....

var tbPause : TToolbarIcons ;

....

tbPause.ToolbarIcon := LoadImage(Hinstance, 'IDB_TB_PAUSEI', IMAGE_ICON, 0, 0, LR_LOADTRANSPARENT); //does not work
tbPause.ToolbarIcon := LoadIcon(Hinstance, 'IDB_TB_PAUSEI'); // does not work

tbPause.ToolbarBmp := LoadImage(Hinstance, 'IDB_TB_PAUSEB', IMAGE_BITMAP, 0, 0, 0); // works

SendMessage(self.NppData.NppHandle, NPPM_ADDTOOLBARICON, WPARAM(self.CmdIdFromDlgId(2)), LPARAM(@tbPause));