1 files changed, 36 insertions, 0 deletions
diff --git a/redo/common_windows.c b/redo/common_windows.c
new file mode 100644
index 0000000..6b9bf8c
--- /dev/null
+++ b/redo/common_windows.c
@@ -0,0 +1,36 @@
+// 17 july 2014
+
+#include "winapi_windows.h"
+
+LRESULT getWindowTextLen(HWND hwnd)
+{
+	return SendMessageW(hwnd, WM_GETTEXTLENGTH, 0, 0);
+}
+
+void getWindowText(HWND hwnd, WPARAM n, LPCWSTR out)
+{
+	SetLastError(0);
+	if (SendMessageW(hwnd, WM_GETTEXT, n + 1, (LPARAM) buf) != n)
+		xpanic("WM_GETTEXT did not copy the correct number of characters out", GetLastError());
+}
+
+void setWindowText(HWND hwnd, LPCWSTR text)
+{
+	switch (SendMessageW(hwnd, WM_SETTEXT, 0, (LPARAM) text)) {
+	case FALSE:
+		xpanic("WM_SETTEXT failed", GetLastError());
+	}
+}
+
+void updateWindow(HWND hwnd)
+{
+	if (UpdateWindow(hwnd) == 0)
+		xpanic("error calling UpdateWindow()", GetLastError());
+}
+
+void storelpParam(HWND hwnd, LPARAM lParam)
+{
+	CREATESTRUCTW *cs = (CREATESTRUCTW *) lParam;
+
+	SetWindowLongPtrW(hwnd, GWLP_USERDATA, (LONG_PTR) (cs->lpCreateParams));
+}