diff --git a/WINGs/WINGs/WINGs.h b/WINGs/WINGs/WINGs.h
index ba7e536b..e1832865 100644
--- a/WINGs/WINGs/WINGs.h
+++ b/WINGs/WINGs/WINGs.h
@@ -1248,7 +1248,7 @@ void WMSetBrowserAllowMultipleSelection(WMBrowser *bPtr, Bool flag);
 
 void WMSetBrowserAllowEmptySelection(WMBrowser *bPtr, Bool flag);
 
-void WMSetBrowserPathSeparator(WMBrowser *bPtr, char *separator);
+void WMSetBrowserPathSeparator(WMBrowser *bPtr, const char *separator);
 
 void WMSetBrowserTitled(WMBrowser *bPtr, Bool flag);
 
@@ -1260,9 +1260,9 @@ void WMRemoveBrowserItem(WMBrowser *bPtr, int column, int row);
 
 void WMSetBrowserMaxVisibleColumns(WMBrowser *bPtr, int columns);
 
-void WMSetBrowserColumnTitle(WMBrowser *bPtr, int column, char *title);
+void WMSetBrowserColumnTitle(WMBrowser *bPtr, int column, const char *title);
 
-WMListItem* WMInsertBrowserItem(WMBrowser *bPtr, int column, int row, char *text, Bool isBranch);
+WMListItem* WMInsertBrowserItem(WMBrowser *bPtr, int column, int row, const char *text, Bool isBranch);
 
 void WMSortBrowserColumn(WMBrowser *bPtr, int column);
 
@@ -1806,7 +1806,7 @@ char* WMGetFilePanelFileName(WMFilePanel *panel);
 void WMFreeFilePanel(WMFilePanel *panel);
 
 int WMRunModalFilePanelForDirectory(WMFilePanel *panel, WMWindow *owner,
-                                    char *path, char *name, char **fileTypes);
+                                    char *path, const char *name, char **fileTypes);
 
 void WMSetFilePanelAccessoryView(WMFilePanel *panel, WMView *view);
 
@@ -1826,7 +1826,7 @@ void WMFreeFontPanel(WMFontPanel *panel);
 
 void WMSetFontPanelAction(WMFontPanel *panel, WMAction2 *action, void *data);
 
-void WMSetFontPanelFont(WMFontPanel *panel, char *fontName);
+void WMSetFontPanelFont(WMFontPanel *panel, const char *fontName);
 
 WMFont* WMGetFontPanelFont(WMFontPanel *panel);
 
diff --git a/WINGs/wbrowser.c b/WINGs/wbrowser.c
index 745811ad..594e81cd 100644
--- a/WINGs/wbrowser.c
+++ b/WINGs/wbrowser.c
@@ -75,7 +75,7 @@ static void loadColumn(WMBrowser * bPtr, int column);
 
 static void removeColumn(WMBrowser * bPtr, int column);
 
-static char *createTruncatedString(WMFont * font, char *text, int *textLen, int width);
+static char *createTruncatedString(WMFont * font, const char *text, int *textLen, int width);
 
 static void willResizeBrowser(W_ViewDelegate *, WMView *, unsigned int *, unsigned int *);
 
@@ -220,7 +220,7 @@ int WMGetBrowserNumberOfColumns(WMBrowser * bPtr)
 	return bPtr->usedColumnCount;
 }
 
-void WMSetBrowserPathSeparator(WMBrowser * bPtr, char *separator)
+void WMSetBrowserPathSeparator(WMBrowser * bPtr, const char *separator)
 {
 	if (bPtr->pathSeparator)
 		wfree(bPtr->pathSeparator);
@@ -350,7 +350,7 @@ int WMGetBrowserSelectedRowInColumn(WMBrowser * bPtr, int column)
 	}
 }
 
-void WMSetBrowserColumnTitle(WMBrowser * bPtr, int column, char *title)
+void WMSetBrowserColumnTitle(WMBrowser * bPtr, int column, const char *title)
 {
 	assert(column >= 0);
 	assert(column < bPtr->usedColumnCount);
@@ -414,7 +414,7 @@ void WMSortBrowserColumnWithComparer(WMBrowser * bPtr, int column, WMCompareData
 	WMSortListItemsWithComparer(bPtr->columns[column], func);
 }
 
-WMListItem *WMInsertBrowserItem(WMBrowser * bPtr, int column, int row, char *text, Bool isBranch)
+WMListItem *WMInsertBrowserItem(WMBrowser * bPtr, int column, int row, const char *text, Bool isBranch)
 {
 	WMListItem *item;
 
@@ -1116,7 +1116,7 @@ static void destroyBrowser(WMBrowser * bPtr)
 	wfree(bPtr);
 }
 
-static char *createTruncatedString(WMFont * font, char *text, int *textLen, int width)
+static char *createTruncatedString(WMFont * font, const char *text, int *textLen, int width)
 {
 	size_t slen;
 	int dLen;
diff --git a/WINGs/wcolorpanel.c b/WINGs/wcolorpanel.c
index 05867662..989250eb 100644
--- a/WINGs/wcolorpanel.c
+++ b/WINGs/wcolorpanel.c
@@ -275,7 +275,7 @@ enum {
 #define M_PI 3.14159265358979323846
 #endif
 
-char *generateNewFilename(char *curName);
+char *generateNewFilename(const char *curName);
 void convertCPColor(CPColor * color);
 RColor ulongToRColor(WMScreen * scr, unsigned long value);
 unsigned char getShift(unsigned char value);
@@ -360,7 +360,7 @@ void WMSetColorPanelAction(WMColorPanel * panel, WMAction2 * action, void *data)
 	panel->clientData = data;
 }
 
-static WMColorPanel *makeColorPanel(WMScreen * scrPtr, char *name)
+static WMColorPanel *makeColorPanel(WMScreen * scrPtr, const char *name)
 {
 	WMColorPanel *panel;
 	RImage *image;
@@ -3336,12 +3336,12 @@ static void hsbInit(W_ColorPanel * panel)
 
 /************************** Common utility functions ************************/
 
-char *generateNewFilename(char *curName)
+char *generateNewFilename(const char *curName)
 {
 	int n;
 	char c;
 	int baseLen;
-	char *ptr;
+	const char *ptr;
 	char *newName;
 
 	assert(curName);
diff --git a/WINGs/wfilepanel.c b/WINGs/wfilepanel.c
index 660ce34d..372683f3 100644
--- a/WINGs/wfilepanel.c
+++ b/WINGs/wfilepanel.c
@@ -62,7 +62,7 @@ typedef struct W_FilePanel {
 #define PWIDTH		330
 #define PHEIGHT 	360
 
-static void listDirectoryOnColumn(WMFilePanel * panel, int column, char *path);
+static void listDirectoryOnColumn(WMFilePanel * panel, int column, const char *path);
 static void browserClick();
 static void browserDClick();
 
@@ -94,7 +94,7 @@ static WMBrowserDelegate browserDelegate = {
 	NULL			/* willScroll */
 };
 
-static int closestListItem(WMList * list, char *text, Bool exact)
+static int closestListItem(WMList * list, const char *text, Bool exact)
 {
 	WMListItem *item;
 	WMArray *items = WMGetListItems(list);
@@ -166,7 +166,7 @@ static void textEditedObserver(void *observerData, WMNotification * notification
 	}
 }
 
-static WMFilePanel *makeFilePanel(WMScreen * scrPtr, char *name, char *title)
+static WMFilePanel *makeFilePanel(WMScreen * scrPtr, const char *name, const char *title)
 {
 	WMFilePanel *fPtr;
 	WMFont *largeFont;
@@ -348,7 +348,7 @@ void WMFreeFilePanel(WMFilePanel * panel)
 }
 
 int
-WMRunModalFilePanelForDirectory(WMFilePanel * panel, WMWindow * owner, char *path, char *name, char **fileTypes)
+WMRunModalFilePanelForDirectory(WMFilePanel * panel, WMWindow * owner, char *path, const char *name, char **fileTypes)
 {
 	WMScreen *scr = WMWidgetScreen(panel->win);
 
@@ -454,7 +454,7 @@ WMView *WMGetFilePanelAccessoryView(WMFilePanel * panel)
 	return panel->accessoryView;
 }
 
-static char *get_name_from_path(char *path)
+static char *get_name_from_path(const char *path)
 {
 	int size;
 
@@ -475,7 +475,7 @@ static char *get_name_from_path(char *path)
 	return wstrdup(&(path[size]));
 }
 
-static int filterFileName(WMFilePanel * panel, char *file, Bool isDirectory)
+static int filterFileName(WMFilePanel * panel, const char *file, Bool isDirectory)
 {
 	return True;
 }
@@ -492,7 +492,7 @@ static int comparer(const void *a, const void *b)
 
 #undef CAST
 
-static void listDirectoryOnColumn(WMFilePanel * panel, int column, char *path)
+static void listDirectoryOnColumn(WMFilePanel * panel, int column, const char *path)
 {
 	WMBrowser *bPtr = panel->browser;
 	struct dirent *dentry;
@@ -584,7 +584,7 @@ static void browserClick(WMBrowser * bPtr, WMFilePanel * panel)
 	}
 }
 
-static void showError(WMScreen * scr, WMWindow * owner, char *s, char *file)
+static void showError(WMScreen * scr, WMWindow * owner, const char *s, const char *file)
 {
 	char *errStr;
 
diff --git a/WINGs/wfontpanel.c b/WINGs/wfontpanel.c
index 55b5a1d0..51e895de 100644
--- a/WINGs/wfontpanel.c
+++ b/WINGs/wfontpanel.c
@@ -71,9 +71,9 @@ static int scalableFontSizes[] = {
 	64
 };
 
-static void setFontPanelFontName(FontPanel * panel, char *family, char *style, double size);
+static void setFontPanelFontName(FontPanel * panel, const char *family, const char *style, double size);
 
-static int isXLFD(char *font, int *length_ret);
+static int isXLFD(const char *font, int *length_ret);
 
 static void arrangeLowerFrame(FontPanel * panel);
 
@@ -313,7 +313,7 @@ WMFont *WMGetFontPanelFont(WMFontPanel * panel)
 	return WMGetTextFieldFont(panel->sampleT);
 }
 
-void WMSetFontPanelFont(WMFontPanel * panel, char *fontName)
+void WMSetFontPanelFont(WMFontPanel * panel, const char *fontName)
 {
 	int fname_len;
 	FcPattern *pattern;
@@ -322,7 +322,7 @@ void WMSetFontPanelFont(WMFontPanel * panel, char *fontName)
 
 	if (!isXLFD(fontName, &fname_len)) {
 		/* maybe its proper fontconfig and we can parse it */
-		pattern = FcNameParse((FcChar8 *) fontName);
+		pattern = FcNameParse((const FcChar8 *) fontName);
 	} else {
 		/* maybe its proper xlfd and we can convert it to an FcPattern */
 		pattern = XftXlfdParse(fontName, False, False);
@@ -386,7 +386,7 @@ static void arrangeLowerFrame(FontPanel * panel)
 
 #define NUM_FIELDS 14
 
-static int isXLFD(char *font, int *length_ret)
+static int isXLFD(const char *font, int *length_ret)
 {
 	int c = 0;
 
@@ -444,7 +444,7 @@ static void addSizeToTypeface(Typeface * face, int size)
 	}
 }
 
-static void addTypefaceToXftFamily(Family * fam, char *style)
+static void addTypefaceToXftFamily(Family * fam, const char *style)
 {
 	Typeface *face;
 	WMArrayIterator i;
@@ -474,7 +474,7 @@ static void addTypefaceToXftFamily(Family * fam, char *style)
  * 	registries (same family but different registries)
  *
  */
-static void addFontToXftFamily(WMHashTable * families, char *name, char *style)
+static void addFontToXftFamily(WMHashTable * families, const char *name, const char *style)
 {
 	WMArrayIterator i;
 	WMArray *array;
@@ -723,7 +723,7 @@ static void sizeClick(WMWidget * w, void *data)
 	preview(panel);
 }
 
-static void setFontPanelFontName(FontPanel * panel, char *family, char *style, double size)
+static void setFontPanelFontName(FontPanel * panel, const char *family, const char *style, double size)
 {
 	int famrow;
 	int stlrow;