Added edit controls and added one to the example window.

comboboxes.go

@@ -67,6 +67,7 @@ const (
 )
 
 // Combobox WM_COMMAND notificaitons.
+// TODO filter out notifications not provided in windows 2000
 const (
 	// from winuser.h
 	CBN_ERRSPACE = (-1)		// TODO this will blow up the Go compiler if it's used

edits.go

@@ -0,0 +1,94 @@
+// 10 february 2014
+package main
+
+import (
+//	"syscall"
+//	"unsafe"
+)
+
+// Edit control styles.
+const (
+	// from winuser.h
+	ES_LEFT = 0x0000
+	ES_CENTER = 0x0001
+	ES_RIGHT = 0x0002
+	ES_MULTILINE = 0x0004
+	ES_UPPERCASE = 0x0008
+	ES_LOWERCASE = 0x0010
+	ES_PASSWORD = 0x0020
+	ES_AUTOVSCROLL = 0x0040
+	ES_AUTOHSCROLL = 0x0080
+	ES_NOHIDESEL = 0x0100
+	ES_OEMCONVERT = 0x0400
+	ES_READONLY = 0x0800
+	ES_WANTRETURN = 0x1000
+	ES_NUMBER = 0x2000
+)
+
+// Edit control messages.
+// TODO filter out messages not provided in windows 2000
+const (
+	// from winuser.h
+	EM_GETSEL = 0x00B0
+	EM_SETSEL = 0x00B1
+	EM_GETRECT = 0x00B2
+	EM_SETRECT = 0x00B3
+	EM_SETRECTNP = 0x00B4
+	EM_SCROLL = 0x00B5
+	EM_LINESCROLL = 0x00B6
+	EM_SCROLLCARET = 0x00B7
+	EM_GETMODIFY = 0x00B8
+	EM_SETMODIFY = 0x00B9
+	EM_GETLINECOUNT = 0x00BA
+	EM_LINEINDEX = 0x00BB
+	EM_SETHANDLE = 0x00BC
+	EM_GETHANDLE = 0x00BD
+	EM_GETTHUMB = 0x00BE
+	EM_LINELENGTH = 0x00C1
+	EM_REPLACESEL = 0x00C2
+	EM_GETLINE = 0x00C4
+	EM_LIMITTEXT = 0x00C5
+	EM_CANUNDO = 0x00C6
+	EM_UNDO = 0x00C7
+	EM_FMTLINES = 0x00C8
+	EM_LINEFROMCHAR = 0x00C9
+	EM_SETTABSTOPS = 0x00CB
+	EM_SETPASSWORDCHAR = 0x00CC
+	EM_EMPTYUNDOBUFFER = 0x00CD
+	EM_GETFIRSTVISIBLELINE = 0x00CE
+	EM_SETREADONLY = 0x00CF
+	EM_SETWORDBREAKPROC = 0x00D0
+	EM_GETWORDBREAKPROC = 0x00D1
+	EM_GETPASSWORDCHAR = 0x00D2
+	EM_SETMARGINS = 0x00D3
+	EM_GETMARGINS = 0x00D4
+	EM_SETLIMITTEXT = EM_LIMITTEXT		// [;win40 Name change]
+	EM_GETLIMITTEXT = 0x00D5
+	EM_POSFROMCHAR = 0x00D6
+	EM_CHARFROMPOS = 0x00D7
+	EM_SETIMESTATUS = 0x00D8
+	EM_GETIMESTATUS = 0x00D9
+)
+
+// Edit control WM_COMMAND notifications.
+// TODO filter out notifications not provided in windows 2000
+const (
+	// from winuser.h
+	EN_SETFOCUS = 0x0100
+	EN_KILLFOCUS = 0x0200
+	EN_CHANGE = 0x0300
+	EN_UPDATE = 0x0400
+	EN_ERRSPACE = 0x0500
+	EN_MAXTEXT = 0x0501
+	EN_HSCROLL = 0x0601
+	EN_VSCROLL = 0x0602
+	EN_ALIGN_LTR_EC = 0x0700
+	EN_ALIGN_RTL_EC = 0x0701
+	EC_LEFTMARGIN = 0x0001
+	EC_RIGHTMARGIN = 0x0002
+	EC_USEFONTINFO = 0xFFFF
+	EMSIS_COMPOSITIONSTRING = 0x0001
+	EIMES_GETCOMPSTRATONCE = 0x0001
+	EIMES_CANCELCOMPSTRINFOCUS = 0x0002
+	EIMES_COMPLETECOMPSTRKILLFOCUS = 0x0004
+)

main.go

@@ -20,12 +20,13 @@ func fatalf(format string, args ...interface{}) {
 }
 
 const (
-	IDC_BUTTON = 100
+	IDC_BUTTON = 100 + iota
-	IDC_VARCOMBO = 101
+	IDC_VARCOMBO
-	IDC_FIXCOMBO = 102
+	IDC_FIXCOMBO
+	IDC_EDIT
 )
 
-var varCombo, fixCombo HWND
+var varCombo, fixCombo, edit HWND
 
 func wndProc(hwnd HWND, msg uint32, wParam WPARAM, lParam LPARAM) LRESULT {
 	switch msg {
@@ -54,12 +55,18 @@ func wndProc(hwnd HWND, msg uint32, wParam WPARAM, lParam LPARAM) LRESULT {
 			}
 			// TODO get text from index
 
+			editText, err := getText(edit)
+			if err != nil {
+				fatalf("error getting edit field text: %v", err)
+			}
+
 			MessageBox(hwnd,
 				fmt.Sprintf("button state: %s\n" +
 					"variable combo box text: %s\n" +
 					"fixed combo box text with WM_GETTEXT: %s\n" +
-					"fixed combo box current index: %d\n",
+					"fixed combo box current index: %d\n" +
-					buttonclick, varText, fixTextWM, fixTextIndex),
+					"edit field text: %s\n",
+					buttonclick, varText, fixTextWM, fixTextIndex, editText),
 				"note",
 				MB_OK)
 		}
@@ -129,10 +136,12 @@ func main() {
 		fatalf("error creating window: %v", err)
 	}
 
+	const controlStyle = WS_CHILD | WS_VISIBLE | WS_TABSTOP
+
 	_, err = CreateWindowEx(
 		0,
 		"BUTTON", "Click Me",
-		BS_PUSHBUTTON | WS_CHILD | WS_VISIBLE | WS_TABSTOP,
+		BS_PUSHBUTTON | controlStyle,
 		20, 20, 100, 20,
 		hwnd, HMENU(IDC_BUTTON), hInstance, NULL)
 	if err != nil {
@@ -142,7 +151,7 @@ func main() {
 	varCombo, err = CreateWindowEx(
 		0,
 		"COMBOBOX", "",
-		CBS_DROPDOWN | CBS_AUTOHSCROLL | WS_CHILD | WS_VISIBLE | WS_TABSTOP,
+		CBS_DROPDOWN | CBS_AUTOHSCROLL | controlStyle,
 		140, 20, 100, 20,
 		hwnd, HMENU(IDC_VARCOMBO), hInstance, NULL)
 	if err != nil {
@@ -160,7 +169,7 @@ func main() {
 	fixCombo, err = CreateWindowEx(
 		0,
 		"COMBOBOX", "",
-		CBS_DROPDOWNLIST | WS_CHILD | WS_VISIBLE | WS_TABSTOP,
+		CBS_DROPDOWNLIST | controlStyle,
 		140, 50, 100, 20,
 		hwnd, HMENU(IDC_FIXCOMBO), hInstance, NULL)
 	if err != nil {
@@ -175,6 +184,16 @@ func main() {
 		}
 	}
 
+	edit, err = CreateWindowEx(
+		0,
+		"EDIT", "",
+		ES_AUTOHSCROLL | ES_NOHIDESEL | WS_BORDER | controlStyle,
+		20, 50, 100, 20,
+		hwnd, HMENU(IDC_EDIT), hInstance, NULL)
+	if err != nil {
+		fatalf("error creating edit field: %v", err)
+	}
+
 	_, err = ShowWindow(hwnd, nCmdShow)
 	if err != nil {
 		fatalf("error showing window: %v", err)