From 561ee240477e348efcd3670a5481ccb538d6724b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?John=20Ankarstr=C3=B6m?= <john@ankarstrom.se>
Date: Wed, 20 Jul 2022 21:27:30 +0200
Subject: Simplify UpdateLayout.

---
 c/common.h | 25 +++++++++++++++++++++++--
 1 file changed, 23 insertions(+), 2 deletions(-)

(limited to 'c/common.h')

diff --git a/c/common.h b/c/common.h
index 01083b8..0343914 100644
--- a/c/common.h
+++ b/c/common.h
@@ -56,7 +56,7 @@ std::optional<T> maybe_make(U... xs)
 
 /* Call Windows API function, throwing error on NULL. */
 template <typename T>
-inline T require(T x)
+inline T require(const T x)
 {
 	if (!x) throw Win32Error();
 	return x;
@@ -64,7 +64,7 @@ inline T require(T x)
 
 /* Call Windows API function, showing a warning on NULL. */
 template <typename T>
-inline T prefer(T x)
+inline T prefer(const T x)
 {
 	if (!x) {
 		EBMessageBox(Win32Error().what<TCHAR>(),
@@ -88,4 +88,25 @@ inline int Cmp(const int a, const int b)
 	return -1;
 }
 
+/* Get window rectangle relative to parent. */
+inline BOOL GetRelativeRect(const HWND hWnd, RECT* const pRr)
+{
+	if (!GetClientRect(hWnd, pRr)) return 0;
+	return MapWindowPoints(hWnd, GetParent(hWnd), (POINT*)pRr, 2);
+}
+
+inline BOOL SetWindowRect(const HWND hWnd,
+    const long left, const long top, const long right, const long bottom)
+{
+	return MoveWindow(hWnd,
+	    left, top,
+	    right-left, bottom-top,
+	    TRUE);
+}
+
+inline BOOL SetWindowRect(const HWND hWnd, const RECT r)
+{
+	return SetWindowRect(hWnd, r.left, r.top, r.right, r.bottom);
+}
+
 #endif
-- 
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