started on win32 dnd

Doxyfile

@@ -1,9 +1,6 @@
-PROJECT_LOGO = resource/logo/logo64.png
+PROJECT_LOGO = resource / logo / logo64.png							PROJECT_NAME  = Milsko
-PROJECT_NAME = Milsko
+												PROJECT_BRIEF = "Lightweight and fast GUI toolkit" OUTPUT_DIRECTORY = doxygen
-PROJECT_BRIEF = "Lightweight and fast GUI toolkit"
+												TAB_SIZE = 8 OPTIMIZE_OUTPUT_FOR_C = YES
-OUTPUT_DIRECTORY = doxygen
-TAB_SIZE = 8
-OPTIMIZE_OUTPUT_FOR_C = YES
 												MARKDOWN_SUPPORT		   = YES
 												FILE_PATTERNS			   = *.h*.md
 												INPUT				   = include / Mw
@@ -22,5 +19,4 @@ OUTPUT_LANGUAGE = English
 															      GENERATE_LATEX  = NO
 															      EXTRACT_ALL     = YES
 
-HTML_EXTRA_STYLESHEET = resource/doxygen-theme/doxygen-awesome.css
+																  HTML_EXTRA_STYLESHEET = resource / doxygen - theme / doxygen - awesome.css HTML_COLORSTYLE = LIGHT
-HTML_COLORSTYLE = LIGHT

Jenkinsfile

@@ -1,22 +1,14 @@
 pipeline {
 	agent{
-		label "built-in"
+	    label "built-in"} stages {
-	}
-	stages {
 		stage("Build document") {
 			when{
-				branch "master"
+			    branch "master"} agent{
-			}
+			    label "built-in"} steps{
-			agent {
-				label "built-in"
-			}
-			steps {
 			    sh("rm -rf include/Mw/LowLevel/Wayland")
 				sh("doxygen")
 				    sh("rm -rf /var/www/milsko-doxygen")
-				sh("mv doxygen/html /var/www/milsko-doxygen")
+					sh("mv doxygen/html /var/www/milsko-doxygen")} post {
-			}
-			post {
 				always {
 					notifyDiscord()
 				}
@@ -26,9 +18,7 @@ pipeline {
 			parallel {
 				stage("Build for Linux 64-bit") {
 					agent{
-						label "built-in"
+					    label "built-in"} steps {
-					}
-					steps {
 						sh("git clean -dfx")
 						    sh("./configure --enable-opengl --enable-vulkan --without-vulkan-string-helper")
 							sh("make -j4")
@@ -38,9 +28,7 @@ pipeline {
 				}
 				stage("Build for Windows 32-bit") {
 					agent{
-						label "built-in"
+					    label "built-in"} steps {
-					}
-					steps {
 						sh("git clean -dfx")
 						    sh("./configure --enable-opengl --enable-stb-truetype --disable-freetype2 --cross --target=Windows --host=i686-w64-mingw32")
 							sh("make -j4")
@@ -51,9 +39,7 @@ pipeline {
 				}
 				stage("Build for Windows 64-bit") {
 					agent{
-						label "built-in"
+					    label "built-in"} steps {
-					}
-					steps {
 						sh("git clean -dfx")
 						    sh("./configure --enable-opengl --enable-stb-truetype --disable-freetype2 --cross --target=Windows --host=x86_64-w64-mingw32")
 							sh("make -j4")
@@ -64,9 +50,7 @@ pipeline {
 				}
 				stage("Build for Windows 32-bit (MSVC)") {
 					agent{
-						label "2012r2"
+					    label "2012r2"} steps {
-					}
-					steps {
 						bat("git clean -dfx")
 						    bat("nmake -f NTMakefile")
 							bat("move /y src\\Mw.dll MwMSVC32.dll")
@@ -76,14 +60,8 @@ pipeline {
 				}
 				stage("Build for Windows 32-bit (Watcom)") {
 					agent{
-						label "built-in"
+					    label "built-in"} environment{
-					}
+					    WATCOM = "/usr/watcom" INCLUDE = "/usr/watcom/h:/usr/watcom/h/nt" PATH = "/usr/watcom/binl64:${env.PATH}"} steps {
-					environment {
-						WATCOM = "/usr/watcom"
-						INCLUDE = "/usr/watcom/h:/usr/watcom/h/nt"
-						PATH = "/usr/watcom/binl64:${env.PATH}"
-					}
-					steps {
 						sh("git clean -dfx")
 						    sh("wmake -f WatMakefile")
 							sh("mv src/Mw.dll MwWat32.dll")

LICENSE

@@ -1,24 +1,28 @@
-Copyright (c) 2025-2026, Pyrite development team
+Copyright(c) 2025 - 2026, Pyrite development team All rights reserved.
-All rights reserved.
 
-Redistribution and use in source and binary forms, with or without
+			  Redistribution and use in source and binary forms,
-modification, are permitted provided that the following conditions are met:
+    with or without
-* Redistributions of source code must retain the above copyright notice, 
+	modification,
-  this list of conditions and the following disclaimer.
+    are permitted provided that the following conditions are met : *Redistributions of source code must retain the above copyright notice,
-* Redistributions in binary form must reproduce the above copyright notice, 
+								   this list of conditions and the following disclaimer.* Redistributions in binary form must reproduce the above copyright notice,
-  this list of conditions and the following disclaimer in the documentation 
+								   this list of conditions and the following disclaimer in the documentation and / or other materials provided with the distribution.* Neither the name of the<organization> nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
-  and/or other materials provided with the distribution.
-* Neither the name of the <organization> nor the names of its contributors 
-  may be used to endorse or promote products derived from this software 
-  without specific prior written permission.
 
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+																																					 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
-ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+								   INCLUDING,
+								   BUT NOT LIMITED TO,
+								   THE IMPLIED
 								   WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 								   DISCLAIMED.IN NO EVENT SHALL<COPYRIGHT HOLDER> BE LIABLE FOR ANY
-DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+								   DIRECT,
-(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+								   INDIRECT,
+								   INCIDENTAL,
+								   SPECIAL,
+								   EXEMPLARY,
+								   OR CONSEQUENTIAL DAMAGES(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 											    LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
-ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+								   ON ANY THEORY OF LIABILITY,
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+								   WHETHER IN CONTRACT,
-SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+								   STRICT LIABILITY,
+								   OR TORT(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+								   SOFTWARE,
+								   EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

configure

@@ -7,7 +7,8 @@ if (index($target, "MINGW") != -1) {
 	$target = "Windows";
 }
 
-foreach my $l (@ARGV) {
+foreach
+	my $l(@ARGV) {
 		if($l = ~/ ^--.+ $ /) {
 		}
 		elsif($l = ~/ ^(.+) = (.+) $ /) {
@@ -54,8 +55,7 @@ param_set("examples",             1);
 #(option that only makes sense on x11)
 param_set("allow-sloppy-focus", 0);
 
-my %features = (
+my % features	  = ("classic-theme"	    = > "use classic theme",
-    "classic-theme"        => "use classic theme",
 		     "stb-image"	    = > "use stb_image, instead use libjpeg/libpng",
 		     "stb-truetype"	    = > "use stb_truetype",
 		     "freetype2"	    = > "use FreeType2",
@@ -69,26 +69,25 @@ my %features = (
 		     "wayland"		    = > "enable wayland backend",
 		     "gnustep"		    = > "use gnustep",
 		     "dbus"		    = > "use DBus on supported platform",
-    "allow-sloppy-focus" => "prevent the x11 backend from using XSetInputFocus to enforce click-to-focus"
+		     "allow-sloppy-focus"   = > "prevent the x11 backend from using XSetInputFocus to enforce click-to-focus");
-);
+my @features_keys = ("1classic-theme", "1stb-image",
-my @features_keys = (
-    "1classic-theme", "1stb-image",
 		     "1stb-truetype", "1freetype2", "1gdi-text",
 		     "1opengl", "2xrender",
 		     "1vulkan", "2vulkan-string-helper",
 		     "1shared", "1static",
 		     "1wayland", "1gnustep",
-    "1dbus"
+		     "1dbus");
-);
 
 sub def_platform {
 	if($target eq "Windows") {
 		param_set("freetype2", 0);
 		param_set("stb-truetype", 0);
-	} elsif($target ne "Darwin" and $target ne "ClassicMacOS" and $target ne "Haiku") {
+	}
+	elsif($target ne "Darwin" and $target ne "ClassicMacOS" and $target ne "Haiku") {
 		param_set("freetype2", 1);
 		param_set("stb-truetype", 0);
-	} else {
+	}
+	else {
 		param_set("freetype2", 0);
 		param_set("stb-truetype", 1);
 	}
@@ -110,7 +109,8 @@ sub def_platform {
 	}
 }
 
-foreach my $l (@ARGV) {
+foreach
+	my $l(@ARGV) {
 		if($l = ~/ ^--target = (.+) $ /) {
 			$target = $1;
 		}
@@ -118,8 +118,8 @@ foreach my $l (@ARGV) {
 
 def_platform();
 
-
+foreach
-foreach my $l (@ARGV) {
+	my $l(@ARGV) {
 		if($l = ~/ ^--with - ([^=] +) = (.+) $ /) {
 			param_set($1, $2);
 		}
@@ -161,12 +161,12 @@ foreach my $l (@ARGV) {
 			print("  --disable-FEATURE               Do not use FEATURE\n");
 			print("  --without-FEATURE               Do not use FEATURE\n");
 
-        foreach my $l (@features_keys) {
+			foreach
-            my $flag = (
+				my $l(@features_keys) {
-                  (substr($l, 0, 1) eq '1')
+					my $flag = ((substr($l, 0, 1) eq '1')
 							? (param_get(substr($l, 1)) ? "--disable-" : "--enable-")
-                : (param_get(substr($l, 1)) ? "--without-" : "--with-")
+							: (param_get(substr($l, 1)) ? "--without-" : "--with-"))
-            ) . substr($l, 1);
+						       .substr($l, 1);
 					my $do	 = param_get(substr($l, 1)) ? "Do not " : "";
 					my $feat = $features{substr($l, 1)};
 					if(not(param_get(substr($l, 1)))) {
@@ -180,11 +180,9 @@ foreach my $l (@ARGV) {
 
 if(-f "./pl/ostype/${target}.pl") {
 	require("./pl/ostype/${target}.pl");
-}
+} else {
-else {
 	print(
-"Perl file (pl/ostype/${target}.pl) was not found for your target. Please add one.\n"
+	    "Perl file (pl/ostype/${target}.pl) was not found for your target. Please add one.\n");
-    );
 	exit(1);
 }
 
@@ -193,7 +191,8 @@ require("./pl/rules.pl");
 print("Target : ".$target."\n");
 
 my @l = ();
-foreach my $e (param_list()) {
+foreach
+	my $e(param_list()) {
 		if(not(param_get($e))) {
 			next;
 		}
@@ -234,18 +233,15 @@ print(OUT "install: lib\n");
 print(OUT
       "	mkdir -p \$(DESTDIR)\$(PREFIX)/lib \$(DESTDIR)\$(PREFIX)/include\n");
 print(OUT
-"	-cp src/${library_prefix}Mw${library_suffix} \$(DESTDIR)\$(PREFIX)/lib/\n"
+      "	-cp src/${library_prefix}Mw${library_suffix} \$(DESTDIR)\$(PREFIX)/lib/\n");
-);
 print(OUT "	-cp src/libMw.a \$(DESTDIR)\$(PREFIX)/lib/\n");
 print(OUT "	cp -rf include \$(DESTDIR)\$(PREFIX)/\n");
 print(OUT "\n");
 print(OUT "format:\n");
 print(OUT
-"	clang-format --verbose -i `find tools src include examples \"(\" -name \"*.c\" -or -name \"*.cc\" -or -name \"*.h\" -or -name \"*.m\" \")\" -and -not -name \"*ttf.c\"`\n"
+      "	clang-format --verbose -i `find tools src include examples \"(\" -name \"*.c\" -or -name \"*.cc\" -or -name \"*.h\" -or -name \"*.m\" \")\" -and -not -name \"*ttf.c\"`\n");
-);
 print(OUT
-"	perltidy -b -bext=\"/\" --paren-tightness=2 `find tools pl configure -name \"*.pl\"`\n"
+      "	perltidy -b -bext=\"/\" --paren-tightness=2 `find tools pl configure -name \"*.pl\"`\n");
-);
 print(OUT "\n");
 print(OUT "lib:");
 
@@ -276,7 +272,8 @@ if (param_get("static")) {
 	print(OUT "	\$(AR) rcs src/libMw.a ".join(" ", @library_targets)."\n");
 }
 
-foreach my $l (@library_targets) {
+foreach
+	my $l(@library_targets) {
 		my $warn     = "-Wall -Wextra -Wno-sign-compare -Wno-unused-value";
 		my $s	     = $l;
 		my $compiler = "CC";
@@ -306,7 +303,8 @@ print(OUT "\n");
 if(param_get("examples")) {
 	print(OUT "examples: ".join(" ", @examples_targets)."\n");
 	print(OUT "\n");
-    foreach my $l (@examples_targets) {
+	foreach
+		my $l(@examples_targets) {
 			my $libs = "";
 			my $s	 = $l;
 			my $o	 = $executable_suffix;
@@ -319,36 +317,32 @@ if (param_get("examples")) {
 
 			if(param_get("shared")) {
 				print(OUT
-    "${l}: ${s}${object_suffix} src/${library_prefix}Mw${library_suffix}\n"
+				      "${l}: ${s}${object_suffix} src/${library_prefix}Mw${library_suffix}\n");
-            );
 			} else {
 				print(OUT
-    "${l}: ${s}${object_suffix} src/${library_prefix}Mw.a\n"
+				      "${l}: ${s}${object_suffix} src/${library_prefix}Mw.a\n");
-            );
 			}
 			if(grep(/ ^cocoa$ /, @backends)) {
 				print(OUT
-"	\$(CC) -L./src \$\(LIBDIR) -o ${l} ${s}${object_suffix} -lMw ${math} ${libs}\n"
+				      "	\$(CC) -L./src \$\(LIBDIR) -o ${l} ${s}${object_suffix} -lMw ${math} ${libs}\n");
-            );
+			} else {
-        }
-        else {
 				print(OUT
-"	\$(CC) -L src -Wl,-R./src \$\(LIBDIR) -o ${l} ${s}${object_suffix} -lMw ${math} ${libs}\n"
+				      "	\$(CC) -L src -Wl,-R./src \$\(LIBDIR) -o ${l} ${s}${object_suffix} -lMw ${math} ${libs}\n");
-            );
 			}
 
 			if($target eq "ClassicMacOS") {
 				print(OUT
-"	".$ENV{RETRO68_TOOLCHAIN_PATH}."/bin/MakePEF ${l} -o ${s}.pef\n");
+				      "	".$ENV{RETRO68_TOOLCHAIN_PATH}
+					  ."/bin/MakePEF ${l} -o ${s}.pef\n");
 				print(OUT
-"	Rez -I ".$ENV{RETRO68_TOOLCHAIN_PATH}."/RIncludes ".$ENV{RETRO68_TOOLCHAIN_PATH}."/RIncludes/Retro68APPL.r -DCFRAG_NAME=\"example\" --data ${l}.pef --cc ${l}.dsk -t APPL\n"
+				      "	Rez -I ".$ENV{RETRO68_TOOLCHAIN_PATH}
-            );
+					  ."/RIncludes ".$ENV{RETRO68_TOOLCHAIN_PATH}
+					  ."/RIncludes/Retro68APPL.r -DCFRAG_NAME=\"example\" --data ${l}.pef --cc ${l}.dsk -t APPL\n");
 			}
 
 			print(OUT "${s}${object_suffix}: ${s}.c\n");
 			print(OUT
-"	\$(CC) -c \$\(INCDIR) -o ${s}${object_suffix} ${s}.c -lMw ${math}\n"
+			      "	\$(CC) -c \$\(INCDIR) -o ${s}${object_suffix} ${s}.c -lMw ${math}\n");
-        );
 		}
 }
 print(OUT "\n");

include/Mw/LowLevel.h

@@ -39,6 +39,7 @@ struct _MwLLCommon {
 	int    type;
 	int    coordinate_type;
 	MwBool supports_transparency;
+	const char** known_mime_types;
 
 	MwLLHandler handler;
 };
@@ -315,6 +316,12 @@ MWDECL void (*MwLLGetClipboard)(MwLL handle, int clipboard_type);
 MWDECL void (*MwLLGetCursorCoord)(MwLL handle, MwPoint* point);
 MWDECL void (*MwLLGetScreenSize)(MwLL handle, MwRect* rect);
 
+/*!
+ * @brief Setup drag and drop capabilities, should the user request it with MwNacceptsDnD
+ * @param handle Handle
+ */
+MWDECL void (*MwLLSetupDragAndDrop)(MwLL handle);
+
 /*!
  * @brief Set any extra parameters for dark theme
  * @param handle Handle

include/Mw/LowLevel/GDI.h

@@ -29,6 +29,28 @@ struct _MwLLGDI {
 	int force_render;
 	int get_clipboard;
 	int get_darktheme;
+
+	/* drag and drop */
+	void *shell32lib;
+	void *ole32lib;
+	void *urlmonlib;
+	UINT (*DragQueryFileW)(HDROP  hDrop,UINT   iFile,LPWSTR lpszFile,UINT   cch);
+	void (*ReleaseStgMedium)(LPSTGMEDIUM unnamedParam1);
+	HRESULT (*OleInitialize)(LPVOID pvReserved);
+	HRESULT (*RegisterDragDrop)(HWND hwnd, LPDROPTARGET pDropTarget);
+	HRESULT (*FindMimeFromData)(
+             LPBC    pBC,
+             LPCWSTR pwzUrl,
+             LPVOID  pBuffer,
+             DWORD   cbSize,
+             LPCWSTR pwzMimeProposed,
+             DWORD   dwMimeFlags,
+             LPWSTR  *ppwzMimeOut,
+             _Reserved_ DWORD   dwReserved
+	);
+	struct _MwLLGDIDropTarget* dropTarget;
+	MwBool listening_for_drag_and_drop;
+	MwBool dnd_override;
 };
 
 struct _MwLLGDIColor {
@@ -47,6 +69,14 @@ struct _MwLLGDIPixmap {
 	HBITMAP	 hMask2;
 };
 
+struct _MwLLGDIDropTarget{
+    struct IDropTargetVtbl *lpVtbl;
+    LONG refCount;
+    HWND hwnd;
+    MwLL handle;
+};
+typedef struct _MwLLGDIDropTarget MwLLGDIDropTarget;
+
 MWDECL int     MwLLGDICallInit(void);
 MWDECL HCURSOR MwLLGDICreateCursor(MwCursor* image, MwCursor* mask);
 

include/Mw/StringDefs.h

@@ -53,6 +53,7 @@
 #define MwNcolumnSpan "IcolumnSpan"
 #define MwNrowSpan "IrowSpan"
 #define MwNdisabled "Idisabled"
+#define MwNacceptsDnD "IacceptsDnD"
 
 #define MwNtitle "Stitle"
 #define MwNtext "Stext"
@@ -62,6 +63,8 @@
 #define MwNforeground "Sforeground"
 #define MwNsubForeground "SsubForeground"
 #define MwNtitleForeground "StitleForeground"
+#define MwNacceptedMimeType "SacceptedMimeType"
+
 
 #define MwNvulkanExtension "SEvulkanExtension"
 #define MwNvulkanLayer "SEvulkanLayer"

milsko.xml

@@ -94,6 +94,7 @@
 		<integer name="forceInverted" common="yes" boolean="yes" />
 		<integer name="isRounded" common="yes" boolean="yes" />
 		<integer name="darkTheme" common="yes" boolean="yes" />
+		<integer name="acceptsDnD" common="yes" boolean="yes" />
 		<integer name="useMonospace" common="yes" boolean="yes" />
 		<integer name="fillArea" />
 		<integer name="darkThemeAutomatic" common="yes" boolean="yes" />
@@ -191,6 +192,9 @@
 		<handler name="darkTheme" common="yes">
 			<integer pointer="yes" />
 		</handler>
+		<handler name="acceptsDnD" common="yes">
+			<integer pointer="yes" />
+		</handler>
 	</handlers>
 	<enumerations>
 		<enumeration name="MwDIRECTION">

src/backend/call.c

@@ -54,6 +54,7 @@
 \
 		MwLLGetCursorCoord   = MwLLGetCursorCoordImpl; \
 		MwLLGetScreenSize    = MwLLGetScreenSizeImpl; \
+		MwLLSetupDragAndDrop = MwLLSetupDragAndDropImpl; \
 \
 		MwLLSetDarkTheme = MwLLSetDarkThemeImpl; \
 		MwLLDoModern	 = MwLLDoModernImpl; \

src/backend/classicmacos.c

@@ -347,6 +347,10 @@ static void MwLLGetCursorCoordImpl(MwLL handle, MwPoint* point) {
 static void MwLLGetScreenSizeImpl(MwLL handle, MwRect* rect) {
 }
 
+static void MwLLSetupDragAndDropImpl(MwLL handle) {
+	(void)handle;
+}
+
 static void MwLLBeginStateChangeImpl(MwLL handle) {
 	MwLLShow(handle, 0);
 }

src/backend/cocoa.m

@@ -1146,6 +1146,10 @@ static void MwLLGetScreenSizeImpl(MwLL handle, MwRect* rect) {
 	rect->height	    = [screen frame].size.height;
 }
 
+static void MwLLSetupDragAndDropImpl(MwLL handle) {
+	(void)handle;
+}
+
 static void MwLLBeginStateChangeImpl(MwLL handle) {
 	MwLLShow(handle, 0);
 }

src/backend/gdi.c

@@ -1,5 +1,7 @@
 #include <Mw/Milsko.h>
 
+#include "../../external/stb_ds.h"
+
 typedef struct userdata {
 	MwLL  ll;
 	POINT min;
@@ -547,6 +549,7 @@ static int MwLLPendingImpl(MwLL handle) {
 
 	(void)handle;
 
+
 	if(handle->gdi.get_clipboard || handle->gdi.get_darktheme) return 1;
 	return PeekMessage(&msg, handle->gdi.hWnd, 0, 0, PM_NOREMOVE) ? 1 : 0;
 }
@@ -994,6 +997,159 @@ static void MwLLClipImpl(MwLL handle, MwRect* rect) {
 	}
 }
 
+static HRESULT STDMETHODCALLTYPE GDIDT_QueryInterface(IDropTarget* this_, REFIID riid, void** ppv) {
+	if(IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_IDropTarget)) {
+		*ppv = this_;
+		this_->lpVtbl->AddRef(this_);
+		return S_OK;
+	}
+	*ppv = NULL;
+	return E_NOINTERFACE;
+}
+
+static ULONG STDMETHODCALLTYPE GDIDT_AddRef(IDropTarget* this_) {
+	MwLLGDIDropTarget* self = (MwLLGDIDropTarget*)this_;
+	return InterlockedIncrement(&self->refCount);
+}
+
+static ULONG STDMETHODCALLTYPE GDIDT_Release(IDropTarget* this_) {
+	MwLLGDIDropTarget* self = (MwLLGDIDropTarget*)this_;
+	LONG		   c	= InterlockedDecrement(&self->refCount);
+	if(c == 0) free(self);
+	return c;
+}
+
+static HRESULT STDMETHODCALLTYPE GDIDT_DragEnter(IDropTarget* this_, IDataObject* pDataObj,
+						 DWORD grfKeyState, POINTL pt, DWORD* pdwEffect) {
+	FORMATETC fmt = {CF_HDROP, NULL, DVASPECT_CONTENT, -1, TYMED_HGLOBAL};
+	STGMEDIUM	   stg;
+	MwLLGDIDropTarget* self = (MwLLGDIDropTarget*)this_;
+
+	if(pDataObj->lpVtbl->GetData(pDataObj, &fmt, &stg) == S_OK) {
+		HDROP hDrop = (HDROP)stg.hGlobal;
+		UINT  count = self->handle->gdi.DragQueryFileW(hDrop, 0xFFFFFFFF, NULL, 0);
+		UINT  i;
+		HRESULT hr;
+
+		for(i = 0; i < count; i++) {
+		    wchar_t path[MAX_PATH];
+			char mime_type_normal[MAX_PATH];
+			wchar_t *mime_type = NULL;
+			HRESULT hr;
+			int i;
+			self->handle->gdi.DragQueryFileW(hDrop, i, path, MAX_PATH);
+			hr = self->handle->gdi.FindMimeFromData( NULL, path, NULL, 0,
+                                   NULL, FMFD_URLASFILENAME, &mime_type, 0x0 );
+
+			wprintf(L"Dragged: %s\n", mime_type);
+			/* TODO: Check if the file begin dragged matches a mime type registered with MwNacceptedMimeType, and only set the effect to DROPEFFECT_COPY if so */
+			*pdwEffect = DROPEFFECT_COPY;
+			break;
+		}
+
+		self->handle->gdi.ReleaseStgMedium(&stg);
+	} else {
+		*pdwEffect = DROPEFFECT_NONE;
+	}
+
+	return S_OK;
+}
+
+static HRESULT STDMETHODCALLTYPE GDIDT_DragOver(IDropTarget* this_, DWORD grfKeyState,
+						POINTL pt, DWORD* pdwEffect) {
+	return S_OK;
+}
+
+static HRESULT STDMETHODCALLTYPE GDIDT_DragLeave(IDropTarget* this_) {
+	return S_OK;
+}
+
+static HRESULT STDMETHODCALLTYPE GDIDT_Drop(IDropTarget* this_, IDataObject* pDataObj,
+					    DWORD grfKeyState, POINTL pt, DWORD* pdwEffect) {
+	FORMATETC	   fmt = {CF_HDROP, NULL, DVASPECT_CONTENT, -1, TYMED_HGLOBAL};
+	STGMEDIUM	   stg;
+	MwLLGDIDropTarget* self = (MwLLGDIDropTarget*)this_;
+
+	if(pDataObj->lpVtbl->GetData(pDataObj, &fmt, &stg) == S_OK) {
+		HDROP hDrop = (HDROP)stg.hGlobal;
+		UINT  count = self->handle->gdi.DragQueryFileW(hDrop, 0xFFFFFFFF, NULL, 0);
+		UINT  i;
+		HRESULT hr;
+
+		for(i = 0; i < count; i++) {
+		    wchar_t path[MAX_PATH];
+			char mime_type_normal[MAX_PATH];
+			wchar_t *mime_type = NULL;
+			HRESULT hr;
+			int i;
+			self->handle->gdi.DragQueryFileW(hDrop, i, path, MAX_PATH);
+			hr = self->handle->gdi.FindMimeFromData( NULL, path, NULL, 0,
+                                   NULL, FMFD_URLASFILENAME, &mime_type, 0x0 );
+
+			/* TODO: Check if the file begin dragged matches a mime type registered with MwNacceptedMimeType, and call a user callback */
+			wprintf(L"Dropped: %s\n", mime_type);
+		}
+
+		self->handle->gdi.ReleaseStgMedium(&stg);
+		*pdwEffect = DROPEFFECT_COPY;
+	} else {
+		*pdwEffect = DROPEFFECT_NONE;
+	}
+	return S_OK;
+}
+
+static IDropTargetVtbl DropTarget_Vtbl = {
+    GDIDT_QueryInterface,
+    GDIDT_AddRef,
+    GDIDT_Release,
+    GDIDT_DragEnter,
+    GDIDT_DragOver,
+    GDIDT_DragLeave,
+    GDIDT_Drop};
+
+static void MwLLSetupDragAndDropImpl(MwLL handle) {
+	HRESULT hr = 0;
+
+	if(!(handle->gdi.shell32lib = LoadLibrary("shell32.dll"))) return;
+	if(!(handle->gdi.ole32lib = LoadLibrary("ole32.dll"))) return;
+	if(!(handle->gdi.urlmonlib = LoadLibrary("Urlmon.dll"))) return;
+
+#define SHELL32_FUNC(x) if(!(handle->gdi.x = (void*)GetProcAddress(handle->gdi.shell32lib, #x))) {printf(#x "not found, drag and drop will not be supported"); return;}
+#define OLE32_FUNC(x) if(!(handle->gdi.x = (void*)GetProcAddress(handle->gdi.ole32lib, #x))) {printf(#x "not found, drag and drop will not be supported"); return;}
+#define URLMON_FUNC(x) if(!(handle->gdi.x = (void*)GetProcAddress(handle->gdi.urlmonlib, #x))) {printf(#x "not found, drag and drop will not be supported"); return;}
+
+	SHELL32_FUNC(DragQueryFileW);
+	OLE32_FUNC(ReleaseStgMedium);
+	OLE32_FUNC(RegisterDragDrop);
+	URLMON_FUNC(FindMimeFromData);
+
+	CoInitialize(NULL);
+	hr = OleInitialize(NULL);
+	if(!SUCCEEDED(hr)) {
+	    if(hr == RPC_E_CHANGED_MODE) {
+			CoUninitialize();
+			hr = OleInitialize(NULL);
+			CoInitialize(NULL);
+		} else {
+    		printf("OleInitialize failed; %08lx\n", hr);
+    		return;
+		}
+	}
+
+	handle->gdi.dropTarget		 = (MwLLGDIDropTarget*)malloc(sizeof(MwLLGDIDropTarget));
+	handle->gdi.dropTarget->lpVtbl	 = &DropTarget_Vtbl;
+	handle->gdi.dropTarget->refCount = 1;
+	handle->gdi.dropTarget->hwnd	 = handle->gdi.hWnd;
+	handle->gdi.dropTarget->handle	 = handle;
+
+	hr = handle->gdi.RegisterDragDrop(handle->gdi.hWnd, (IDropTarget*)handle->gdi.dropTarget);
+	if(!SUCCEEDED(hr)) {
+		printf("RegisterDragDrop failed; %08lx\n", hr);
+		return;
+	}
+	printf("dnd setup\n");
+}
+
 static int MwLLGDICallInitImpl(void) {
 	void* ntdll;
 

src/backend/haiku.cc

@@ -879,6 +879,10 @@ static void MwLLGetScreenSizeImpl(MwLL handle, MwRect* rect) {
 	delete screen;
 }
 
+static void MwLLSetupDragAndDropImpl(MwLL handle) {
+	(void)handle;
+}
+
 static void MwLLSetDarkThemeImpl(MwLL handle, int toggle) {
 	(void)handle;
 	(void)toggle;

src/backend/wayland/wayland.c

@@ -1779,6 +1779,10 @@ static void MwLLGetScreenSizeImpl(MwLL handle, MwRect* rect) {
 	rect->height = handle->wayland.mh;
 }
 
+static void MwLLSetupDragAndDropImpl(MwLL handle) {
+	(void)handle;
+}
+
 static void MwLLBeginStateChangeImpl(MwLL handle) {
 	(void)handle;
 	/* no-op */

src/backend/x11.c

@@ -1361,6 +1361,10 @@ static void MwLLGetScreenSizeImpl(MwLL handle, MwRect* rect) {
 	rect->height	  = xwa.height;
 }
 
+static void MwLLSetupDragAndDropImpl(MwLL handle) {
+	(void)handle;
+}
+
 static void MwLLBeginStateChangeImpl(MwLL handle) {
 	MwLLShow(handle, 0);
 }

src/core.c

@@ -658,6 +658,10 @@ void MwSetInteger(MwWidget handle, const char* key, int n) {
 
 		if(h->lowlevel != NULL) MwLLSetDarkTheme(h->lowlevel, n);
 	}
+
+	if(strcmp(key, MwNacceptsDnD) == 0) {
+		if(handle->lowlevel != NULL) MwLLSetupDragAndDrop(handle->lowlevel);
+	}
 }
 
 void MwSetText(MwWidget handle, const char* key, const char* value) {
@@ -692,6 +696,12 @@ void MwSetText(MwWidget handle, const char* key, const char* value) {
 	if(strcmp(key, MwNbackground) == 0 || strcmp(key, MwNforeground) == 0 || strcmp(key, MwNsubBackground) == 0 || strcmp(key, MwNsubForeground) == 0) {
 		MwForceRender(handle);
 	}
+
+	if(strcmp(key, MwNacceptedMimeType) == 0) {
+		if(handle->lowlevel != NULL) {
+			arrput(handle->lowlevel->common.known_mime_types, value);
+		}
+	}
 }
 
 void MwSetVoid(MwWidget handle, const char* key, void* value) {

src/lowlevel.c

@@ -50,7 +50,7 @@ void (*MwLLGetClipboard)(MwLL, int clipboard_type)			    = NULL;
 
 void (*MwLLGetCursorCoord)(MwLL handle, MwPoint* point) = NULL;
 void (*MwLLGetScreenSize)(MwLL handle, MwRect* rect)	= NULL;
-
+void (*MwLLSetupDragAndDrop)(MwLL handle)		= NULL;
 void (*MwLLSetDarkTheme)(MwLL handle, int toggle)	= NULL;
 
 MwBool (*MwLLDoModern)(MwLL handle) = NULL;