Gui加阴影的两个示例

Gui加边缘阴影.ahk

; https://www.autohotkey.com/boards/viewtopic.php?f=6&t=29117
Gui, +HwndHGui -Caption
FrameShadow(HGui)
Gui, Add, Button, x10 y130 w100 h30, Minimize
Gui, Add, Button, x365 y130 w100 h30, Exit
Gui, Add, GroupBox, x10 y10 w455 h110, GroupBox
Gui, Add, Edit, x20 y30 w435 h80 +Multi, Edit
Gui, Show, Center w475 h166, Frame Shadow Test
Return

ButtonExit:
GuiClose:
ExitApp

ButtonMinimize:
WinMinimize, A
return

FrameShadow(HGui) {
  DllCall("dwmapi\DwmIsCompositionEnabled","IntP",_ISENABLED) ; 获取DWM管理器是否已启用
  if !_ISENABLED ; 如果未启用DWM，则生成基本阴影
    DllCall("SetClassLong","UInt",HGui,"Int",-26,"Int",DllCall("GetClassLong","UInt",HGui,"Int",-26)|0x20000)
  else {
    VarSetCapacity(_,16)
    , NumPut(1,&_,0,"UInt"), NumPut(1,&_,4,"UInt"), NumPut(1,&_,8,"UInt"), NumPut(1,&_,12,"UInt")
    , DllCall("dwmapi\DwmSetWindowAttribute", "Ptr", HGui, "UInt", 2, "Int*", 2, "UInt", 4)
    , DllCall("dwmapi\DwmExtendFrameIntoClientArea", "Ptr", HGui, "Ptr", &_)
  }
}

WM_LBUTTONDOWN(wParam, lParam, msg, hwnd) {
  static init := OnMessage(0x0201, "WM_LBUTTONDOWN")
  PostMessage, 0xA1, 2,,, A
}

Gui加三种阴影.ahk

; https://www.autohotkey.com/boards/viewtopic.php?f=6&t=29117
; 原贴内有更多示例

#NoEnv
CS_DROPSHADOW := 0x00020000
ClassStyle := GetGuiClassStyle()

Gui,  New1:New, +hwndHGUI
SetGuiClassStyle(HGUI, ClassStyle | CS_DROPSHADOW)
Gui,  New1:Show, x100 y100 w250 h200, Test 1

SetGuiClassStyle(HGUI, ClassStyle)
Gui, New
Gui, Show, x400 y100 w250 h200, Test 2

Gui, New, +hwndHGUI
SetGuiClassStyle(HGUI, ClassStyle | CS_DROPSHADOW)
Gui,  New2:Show, x700 y100 w250 h200, Test 3
SetGuiClassStyle(HGUI, ClassStyle)

Return

GuiClose:
GuiEscape:
  ExitApp

GetGuiClassStyle() {
  Gui, GetGuiClassStyleGUI:Add, Text
  Module := DllCall("GetModuleHandle", "Ptr", 0, "UPtr")
  VarSetCapacity(WNDCLASS, A_PtrSize * 10, 0)
  ClassStyle := DllCall("GetClassInfo", "Ptr", Module, "Str", "AutoHotkeyGUI", "Ptr", &WNDCLASS, "UInt")
            ? NumGet(WNDCLASS, "Int")
            : ""
  Gui, GetGuiClassStyleGUI:Destroy
  Return ClassStyle
}

SetGuiClassStyle(HGUI, Style) {
  Return DllCall("SetClassLong" . (A_PtrSize = 8 ? "Ptr" : ""), "Ptr", HGUI, "Int", -26, "Ptr", Style, "UInt")
}