C# Signature:

[DllImport("shell32.dll")]
public static extern void SHGetSetSettings(ref SHELLSTATE lpss, SSF dwMask, bool bSet);

VB Signature:

Declare Function SHGetSetSettings Lib "shell32.dll" (TODO) As TODO

User-Defined Types:

  [StructLayout(LayoutKind.Sequential)]
  public struct SHELLSTATE {
    public uint flags_1;
    public uint dwWin95Unused;
    public uint uWin95Unused;
    public int  lParamSort;
    public int  iSortDirection;
    public uint version;
    public uint uNotUsed;
    public uint flags_2;

    public bool fShowAllObjects {
      get {return (flags_1 & 0x00000001u) == 0x00000001u;}
      set {if (value) {flags_1 |= 0x00000001u;} else {flags_1 &= ~0x00000001u;}}
    }
    public bool fShowExtensions {
      get {return (flags_1 & 0x00000002u) == 0x00000002u;}
      set {if (value) {flags_1 |= 0x00000002u;} else {flags_1 &= ~0x00000002u;}}
    }
    public bool fNoConfirmRecycle {
      get {return (flags_1 & 0x00000004u) == 0x00000004u;}
      set {if (value) {flags_1 |= 0x00000004u;} else {flags_1 &= ~0x00000004u;}}
    }
    public bool fShowSysFiles {
      get {return (flags_1 & 0x00000008u) == 0x00000008u;}
      set {if (value) {flags_1 |= 0x00000008u;} else {flags_1 &= ~0x00000008u;}}
    }
    public bool fShowCompColor {
      get {return (flags_1 & 0x00000010u) == 0x00000010u;}
      set {if (value) {flags_1 |= 0x00000010u;} else {flags_1 &= ~0x00000010u;}}
    }
    public bool fDoubleClickInWebView {
      get {return (flags_1 & 0x00000020u) == 0x00000020u;}
      set {if (value) {flags_1 |= 0x00000020u;} else {flags_1 &= ~0x00000020u;}}
    }
    public bool fDesktopHTML {
      get {return (flags_1 & 0x00000040u) == 0x00000040u;}
      set {if (value) {flags_1 |= 0x00000040u;} else {flags_1 &= ~0x00000040u;}}
    }
    public bool fWin95Classic {
      get {return (flags_1 & 0x00000080u) == 0x00000080u;}
      set {if (value) {flags_1 |= 0x00000080u;} else {flags_1 &= ~0x00000080u;}}
    }
    public bool fDontPrettyPath {
      get {return (flags_1 & 0x00000100u) == 0x00000100u;}
      set {if (value) {flags_1 |= 0x00000100u;} else {flags_1 &= ~0x00000100u;}}
    }
    public bool fShowAttribCol {
      get {return (flags_1 & 0x00000200u) == 0x00000200u;}
      set {if (value) {flags_1 |= 0x00000200u;} else {flags_1 &= ~0x00000200u;}}
    }
    public bool fMapNetDrvBtn {
      get {return (flags_1 & 0x00000400u) == 0x00000400u;}
      set {if (value) {flags_1 |= 0x00000400u;} else {flags_1 &= ~0x00000400u;}}
    }
    public bool fShowInfoTip {
      get {return (flags_1 & 0x00000800u) == 0x00000800u;}
      set {if (value) {flags_1 |= 0x00000800u;} else {flags_1 &= ~0x00000800u;}}
    }
    public bool fHideIcons {
      get {return (flags_1 & 0x00001000u) == 0x00001000u;}
      set {if (value) {flags_1 |= 0x00001000u;} else {flags_1 &= ~0x00001000u;}}
    }
    public bool fWebView {
      get {return (flags_1 & 0x00002000u) == 0x00002000u;}
      set {if (value) {flags_1 |= 0x00002000u;} else {flags_1 &= ~0x00002000u;}}
    }
    public bool fFilter {
      get {return (flags_1 & 0x00004000u) == 0x00004000u;}
      set {if (value) {flags_1 |= 0x00004000u;} else {flags_1 &= ~0x00004000u;}}
    }
    public bool fShowSuperHidden {
      get {return (flags_1 & 0x00008000u) == 0x00008000u;}
      set {if (value) {flags_1 |= 0x00008000u;} else {flags_1 &= ~0x00008000u;}}
    }
    public bool fNoNetCrawling {
      get {return (flags_1 & 0x00010000u) == 0x00010000u;}
      set {if (value) {flags_1 |= 0x00010000u;} else {flags_1 &= ~0x00010000u;}}
    }

    public bool fSepProcess {
      get {return (flags_2 & 0x00000001u) == 0x00000001u;}
      set {if (value) {flags_2 |= 0x00000001u;} else {flags_2 &= ~0x00000001u;}}
    }
    public bool fStartPanelOn {
      get {return (flags_2 & 0x00000002u) == 0x00000002u;}
      set {if (value) {flags_2 |= 0x00000002u;} else {flags_2 &= ~0x00000002u;}}
    }
    public bool fShowStartPage {
      get {return (flags_2 & 0x00000004u) == 0x00000004u;}
      set {if (value) {flags_2 |= 0x00000004u;} else {flags_2 &= ~0x00000004u;}}
    }
    public bool fAutoCheckSelect {
      get {return (flags_2 & 0x00000008u) == 0x00000008u;}
      set {if (value) {flags_2 |= 0x00000008u;} else {flags_2 &= ~0x00000008u;}}
    }
    public bool fIconsOnly {
      get {return (flags_2 & 0x00000010u) == 0x00000010u;}
      set {if (value) {flags_2 |= 0x00000010u;} else {flags_2 &= ~0x00000010u;}}
    }
    public bool fShowTypeOverlay {
      get {return (flags_2 & 0x00000020u) == 0x00000020u;}
      set {if (value) {flags_2 |= 0x00000020u;} else {flags_2 &= ~0x00000020u;}}
    }
    public bool fShowStatusBar {
      get {return (flags_2 & 0x00000040u) == 0x00000040u;}
      set {if (value) {flags_2 |= 0x00000040u;} else {flags_2 &= ~0x00000040u;}}
    }
  }

  [Flags]
  public enum SSF : uint {
    SSF_SHOWALLOBJECTS       = 0x00000001,
    SSF_SHOWEXTENSIONS       = 0x00000002,
    SSF_HIDDENFILEEXTS       = 0x00000004,
    SSF_SERVERADMINUI    = 0x00000004,
    SSF_SHOWCOMPCOLOR    = 0x00000008,
    SSF_SORTCOLUMNS      = 0x00000010,
    SSF_SHOWSYSFILES     = 0x00000020,
    SSF_DOUBLECLICKINWEBVIEW = 0x00000080,
    SSF_SHOWATTRIBCOL    = 0x00000100,
    SSF_DESKTOPHTML      = 0x00000200,
    SSF_WIN95CLASSIC     = 0x00000400,
    SSF_DONTPRETTYPATH       = 0x00000800,
    SSF_MAPNETDRVBUTTON      = 0x00001000,
    SSF_SHOWINFOTIP      = 0x00002000,
    SSF_HIDEICONS        = 0x00004000,
    SSF_NOCONFIRMRECYCLE     = 0x00008000,
    SSF_FILTER           = 0x00010000,
    SSF_WEBVIEW          = 0x00020000,
    SSF_SHOWSUPERHIDDEN      = 0x00040000,
    SSF_SEPPROCESS       = 0x00080000,
    SSF_NONETCRAWLING    = 0x00100000,
    SSF_STARTPANELON     = 0x00200000,
    SSF_SHOWSTARTPAGE    = 0x00400000,
    SSF_AUTOCHECKSELECT      = 0x00800000,
    SSF_ICONSONLY        = 0x01000000,
    SSF_SHOWTYPEOVERLAY      = 0x02000000,
    SSF_SHOWSTATUSBAR    = 0x04000000
  }

Alternative Managed API:

Do you know one? Please contribute it!

Notes:

None.

Tips & Tricks:

Please add some!

Sample Code:

    SHELLSTATE state = new SHELLSTATE();
    SHGetSetSettings(ref state, SSF.SSF_DOUBLECLICKINWEBVIEW, false); // get the current fDoubleClickInWebView flag
    state.fDoubleClickInWebView = !state.fDoubleClickInWebView; // toggle the fDoubleClickInWebView flag
    SHGetSetSettings(ref state, SSF.SSF_DOUBLECLICKINWEBVIEW, true); // set the new flag

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