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Class_CtlColors.ahk
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; ======================================================================================================================
; AHK 1.1+
; ======================================================================================================================
; Function: Auxiliary object to color controls on WM_CTLCOLOR... notifications.
; Supported controls are: Checkbox, ComboBox, DropDownList, Edit, ListBox, Radio, Text.
; Checkboxes and Radios accept only background colors due to design.
; Namespace: CtlColors
; Tested with: 1.1.25.02
; Tested on: Win 10 (x64)
; Change log: 1.0.04.00/2017-10-30/just me - added transparent background (BkColor = "Trans").
; 1.0.03.00/2015-07-06/just me - fixed Change() to run properly for ComboBoxes.
; 1.0.02.00/2014-06-07/just me - fixed __New() to run properly with compiled scripts.
; 1.0.01.00/2014-02-15/just me - changed class initialization.
; 1.0.00.00/2014-02-14/just me - initial release.
; ======================================================================================================================
; This software is provided 'as-is', without any express or implied warranty.
; In no event will the authors be held liable for any damages arising from the use of this software.
; ======================================================================================================================
Class CtlColors {
; ===================================================================================================================
; Class variables
; ===================================================================================================================
; Registered Controls
Static Attached := {}
; OnMessage Handlers
Static HandledMessages := {Edit: 0, ListBox: 0, Static: 0}
; Message Handler Function
Static MessageHandler := "CtlColors_OnMessage"
; Windows Messages
Static WM_CTLCOLOR := {Edit: 0x0133, ListBox: 0x134, Static: 0x0138}
; HTML Colors (BGR)
Static HTML := {AQUA: 0xFFFF00, BLACK: 0x000000, BLUE: 0xFF0000, FUCHSIA: 0xFF00FF, GRAY: 0x808080, GREEN: 0x008000
, LIME: 0x00FF00, MAROON: 0x000080, NAVY: 0x800000, OLIVE: 0x008080, PURPLE: 0x800080, RED: 0x0000FF
, SILVER: 0xC0C0C0, TEAL: 0x808000, WHITE: 0xFFFFFF, YELLOW: 0x00FFFF}
; Transparent Brush
Static NullBrush := DllCall("GetStockObject", "Int", 5, "UPtr")
; System Colors
Static SYSCOLORS := {Edit: "", ListBox: "", Static: ""}
; Error message in case of errors
Static ErrorMsg := ""
; Class initialization
Static InitClass := CtlColors.ClassInit()
; ===================================================================================================================
; Constructor / Destructor
; ===================================================================================================================
__New() { ; You must not instantiate this class!
If (This.InitClass == "!DONE!") { ; external call after class initialization
This["!Access_Denied!"] := True
Return False
}
}
; ----------------------------------------------------------------------------------------------------------------
__Delete() {
If This["!Access_Denied!"]
Return
This.Free() ; free GDI resources
}
; ===================================================================================================================
; ClassInit Internal creation of a new instance to ensure that __Delete() will be called.
; ===================================================================================================================
ClassInit() {
CtlColors := New CtlColors
Return "!DONE!"
}
; ===================================================================================================================
; CheckBkColor Internal check for parameter BkColor.
; ===================================================================================================================
CheckBkColor(ByRef BkColor, Class) {
This.ErrorMsg := ""
If (BkColor != "") && !This.HTML.HasKey(BkColor) && !RegExMatch(BkColor, "^[[:xdigit:]]{6}$") {
This.ErrorMsg := "Invalid parameter BkColor: " . BkColor
Return False
}
BkColor := BkColor = "" ? This.SYSCOLORS[Class]
: This.HTML.HasKey(BkColor) ? This.HTML[BkColor]
: "0x" . SubStr(BkColor, 5, 2) . SubStr(BkColor, 3, 2) . SubStr(BkColor, 1, 2)
Return True
}
; ===================================================================================================================
; CheckTxColor Internal check for parameter TxColor.
; ===================================================================================================================
CheckTxColor(ByRef TxColor) {
This.ErrorMsg := ""
If (TxColor != "") && !This.HTML.HasKey(TxColor) && !RegExMatch(TxColor, "i)^[[:xdigit:]]{6}$") {
This.ErrorMsg := "Invalid parameter TextColor: " . TxColor
Return False
}
TxColor := TxColor = "" ? ""
: This.HTML.HasKey(TxColor) ? This.HTML[TxColor]
: "0x" . SubStr(TxColor, 5, 2) . SubStr(TxColor, 3, 2) . SubStr(TxColor, 1, 2)
Return True
}
; ===================================================================================================================
; Attach Registers a control for coloring.
; Parameters: HWND - HWND of the GUI control
; BkColor - HTML color name, 6-digit hexadecimal RGB value, or "" for default color
; ----------- Optional
; TxColor - HTML color name, 6-digit hexadecimal RGB value, or "" for default color
; Return values: On success - True
; On failure - False, CtlColors.ErrorMsg contains additional informations
; ===================================================================================================================
Attach(HWND, BkColor, TxColor := "") {
; Names of supported classes
Static ClassNames := {Button: "", ComboBox: "", Edit: "", ListBox: "", Static: ""}
; Button styles
Static BS_CHECKBOX := 0x2, BS_RADIOBUTTON := 0x8
; Editstyles
Static ES_READONLY := 0x800
; Default class background colors
Static COLOR_3DFACE := 15, COLOR_WINDOW := 5
; Initialize default background colors on first call -------------------------------------------------------------
If (This.SYSCOLORS.Edit = "") {
This.SYSCOLORS.Static := DllCall("User32.dll\GetSysColor", "Int", COLOR_3DFACE, "UInt")
This.SYSCOLORS.Edit := DllCall("User32.dll\GetSysColor", "Int", COLOR_WINDOW, "UInt")
This.SYSCOLORS.ListBox := This.SYSCOLORS.Edit
}
This.ErrorMsg := ""
; Check colors ---------------------------------------------------------------------------------------------------
If (BkColor = "") && (TxColor = "") {
This.ErrorMsg := "Both parameters BkColor and TxColor are empty!"
Return False
}
; Check HWND -----------------------------------------------------------------------------------------------------
If !(CtrlHwnd := HWND + 0) || !DllCall("User32.dll\IsWindow", "UPtr", HWND, "UInt") {
This.ErrorMsg := "Invalid parameter HWND: " . HWND
Return False
}
If This.Attached.HasKey(HWND) {
This.ErrorMsg := "Control " . HWND . " is already registered!"
Return False
}
Hwnds := [CtrlHwnd]
; Check control's class ------------------------------------------------------------------------------------------
Classes := ""
WinGetClass, CtrlClass, ahk_id %CtrlHwnd%
This.ErrorMsg := "Unsupported control class: " . CtrlClass
If !ClassNames.HasKey(CtrlClass)
Return False
ControlGet, CtrlStyle, Style, , , ahk_id %CtrlHwnd%
If (CtrlClass = "Edit")
Classes := ["Edit", "Static"]
Else If (CtrlClass = "Button") {
IF (CtrlStyle & BS_RADIOBUTTON) || (CtrlStyle & BS_CHECKBOX)
Classes := ["Static"]
Else
Return False
}
Else If (CtrlClass = "ComboBox") {
VarSetCapacity(CBBI, 40 + (A_PtrSize * 3), 0)
NumPut(40 + (A_PtrSize * 3), CBBI, 0, "UInt")
DllCall("User32.dll\GetComboBoxInfo", "Ptr", CtrlHwnd, "Ptr", &CBBI)
Hwnds.Insert(NumGet(CBBI, 40 + (A_PtrSize * 2, "UPtr")) + 0)
Hwnds.Insert(Numget(CBBI, 40 + A_PtrSize, "UPtr") + 0)
Classes := ["Edit", "Static", "ListBox"]
}
If !IsObject(Classes)
Classes := [CtrlClass]
; Check background color -----------------------------------------------------------------------------------------
If (BkColor <> "Trans")
If !This.CheckBkColor(BkColor, Classes[1])
Return False
; Check text color -----------------------------------------------------------------------------------------------
If !This.CheckTxColor(TxColor)
Return False
; Activate message handling on the first call for a class --------------------------------------------------------
For I, V In Classes {
If (This.HandledMessages[V] = 0)
OnMessage(This.WM_CTLCOLOR[V], This.MessageHandler)
This.HandledMessages[V] += 1
}
; Store values for HWND ------------------------------------------------------------------------------------------
If (BkColor = "Trans")
Brush := This.NullBrush
Else
Brush := DllCall("Gdi32.dll\CreateSolidBrush", "UInt", BkColor, "UPtr")
For I, V In Hwnds
This.Attached[V] := {Brush: Brush, TxColor: TxColor, BkColor: BkColor, Classes: Classes, Hwnds: Hwnds}
; Redraw control -------------------------------------------------------------------------------------------------
DllCall("User32.dll\InvalidateRect", "Ptr", HWND, "Ptr", 0, "Int", 1)
This.ErrorMsg := ""
Return True
}
; ===================================================================================================================
; Change Change control colors.
; Parameters: HWND - HWND of the GUI control
; BkColor - HTML color name, 6-digit hexadecimal RGB value, or "" for default color
; ----------- Optional
; TxColor - HTML color name, 6-digit hexadecimal RGB value, or "" for default color
; Return values: On success - True
; On failure - False, CtlColors.ErrorMsg contains additional informations
; Remarks: If the control isn't registered yet, Add() is called instead internally.
; ===================================================================================================================
Change(HWND, BkColor, TxColor := "") {
; Check HWND -----------------------------------------------------------------------------------------------------
This.ErrorMsg := ""
HWND += 0
If !This.Attached.HasKey(HWND)
Return This.Attach(HWND, BkColor, TxColor)
CTL := This.Attached[HWND]
; Check BkColor --------------------------------------------------------------------------------------------------
If (BkColor <> "Trans")
If !This.CheckBkColor(BkColor, CTL.Classes[1])
Return False
; Check TxColor ------------------------------------------------------------------------------------------------
If !This.CheckTxColor(TxColor)
Return False
; Store Colors ---------------------------------------------------------------------------------------------------
If (BkColor <> CTL.BkColor) {
If (CTL.Brush) {
If (Ctl.Brush <> This.NullBrush)
DllCall("Gdi32.dll\DeleteObject", "Prt", CTL.Brush)
This.Attached[HWND].Brush := 0
}
If (BkColor = "Trans")
Brush := This.NullBrush
Else
Brush := DllCall("Gdi32.dll\CreateSolidBrush", "UInt", BkColor, "UPtr")
For I, V In CTL.Hwnds {
This.Attached[V].Brush := Brush
This.Attached[V].BkColor := BkColor
}
}
For I, V In Ctl.Hwnds
This.Attached[V].TxColor := TxColor
This.ErrorMsg := ""
DllCall("User32.dll\InvalidateRect", "Ptr", HWND, "Ptr", 0, "Int", 1)
Return True
}
; ===================================================================================================================
; Detach Stop control coloring.
; Parameters: HWND - HWND of the GUI control
; Return values: On success - True
; On failure - False, CtlColors.ErrorMsg contains additional informations
; ===================================================================================================================
Detach(HWND) {
This.ErrorMsg := ""
HWND += 0
If This.Attached.HasKey(HWND) {
CTL := This.Attached[HWND].Clone()
If (CTL.Brush) && (CTL.Brush <> This.NullBrush)
DllCall("Gdi32.dll\DeleteObject", "Prt", CTL.Brush)
For I, V In CTL.Classes {
If This.HandledMessages[V] > 0 {
This.HandledMessages[V] -= 1
If This.HandledMessages[V] = 0
OnMessage(This.WM_CTLCOLOR[V], "")
} }
For I, V In CTL.Hwnds
This.Attached.Remove(V, "")
DllCall("User32.dll\InvalidateRect", "Ptr", HWND, "Ptr", 0, "Int", 1)
CTL := ""
Return True
}
This.ErrorMsg := "Control " . HWND . " is not registered!"
Return False
}
; ===================================================================================================================
; Free Stop coloring for all controls and free resources.
; Return values: Always True.
; ===================================================================================================================
Free() {
For K, V In This.Attached
If (V.Brush) && (V.Brush <> This.NullBrush)
DllCall("Gdi32.dll\DeleteObject", "Ptr", V.Brush)
For K, V In This.HandledMessages
If (V > 0) {
OnMessage(This.WM_CTLCOLOR[K], "")
This.HandledMessages[K] := 0
}
This.Attached := {}
Return True
}
; ===================================================================================================================
; IsAttached Check if the control is registered for coloring.
; Parameters: HWND - HWND of the GUI control
; Return values: On success - True
; On failure - False
; ===================================================================================================================
IsAttached(HWND) {
Return This.Attached.HasKey(HWND)
}
}
; ======================================================================================================================
; CtlColors_OnMessage
; This function handles CTLCOLOR messages. There's no reason to call it manually!
; ======================================================================================================================
CtlColors_OnMessage(HDC, HWND) {
Critical
If CtlColors.IsAttached(HWND) {
CTL := CtlColors.Attached[HWND]
If (CTL.TxColor != "")
DllCall("Gdi32.dll\SetTextColor", "Ptr", HDC, "UInt", CTL.TxColor)
If (CTL.BkColor = "Trans")
DllCall("Gdi32.dll\SetBkMode", "Ptr", HDC, "UInt", 1) ; TRANSPARENT = 1
Else
DllCall("Gdi32.dll\SetBkColor", "Ptr", HDC, "UInt", CTL.BkColor)
Return CTL.Brush
}
}