From ee25e577e58f15ff6caa551bdd9c96e626ee89f7 Mon Sep 17 00:00:00 2001
From: vcaesar <vzvway@gmail.com>
Date: Sun, 26 Jun 2022 10:23:17 -0700
Subject: [PATCH] add get the HWND by PID support

---
 robotgo.go        | 5 +++++
 screen/goScreen.h | 9 +++++++++
 2 files changed, 14 insertions(+)

diff --git a/robotgo.go b/robotgo.go
index f73c593..420c22c 100644
--- a/robotgo.go
+++ b/robotgo.go
@@ -236,6 +236,11 @@ func getNumDisplays() int {
 	return int(C.get_num_displays())
 }
 
+// GetHwndByPId get the hwnd by pid
+func GetHwndByPId(pid int) int {
+	return int(C.get_hwnd_by_pid(C.uintptr(pid)))
+}
+
 // SysScale get the sys scale
 func SysScale(displayId ...int) float64 {
 	display := displayIdx(displayId...)
diff --git a/screen/goScreen.h b/screen/goScreen.h
index 2a2bc88..b9c0a16 100644
--- a/screen/goScreen.h
+++ b/screen/goScreen.h
@@ -97,6 +97,15 @@ uint32_t get_num_displays() {
 	#endif
 }
 
+uintptr get_hwnd_by_pid(uintptr pid) {
+	#if defined(IS_WINDOWS)
+		HWND hwnd = GetHwndByPId(pid);
+		return (uintptr)hwnd;
+	#else
+		return 0;
+	#endif
+}
+
 void bitmap_dealloc(MMBitmapRef bitmap) {
 	if (bitmap != NULL) {
 		destroyMMBitmap(bitmap);