Remove compile-time dependency on Imm32.dll on Win32. I have no MSWindows machine here, so this code is likely to contain one or more typos... . When working, this will take the burdon of linking to imm32 away, so that existing makefiles will need no changes.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@6217 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

src/Fl_win32.cxx

@@ -107,6 +107,36 @@ static HMODULE get_wsock_mod() {
   return s_wsock_mod;
 }
 
+/*
+ * Dynamic linking of imm32.dll
+ * This library is only needed for a hand full (four ATM) functions relating to 
+ * international text rendering and locales. Dynamically loading reduces initial
+ * size and link dependencies.
+ */
+static HMODULE s_imm_module = 0;
+typedef HIMC (WINAPI* flTypeImmGetContext)(HWND);
+static flTypeImmGetContext flImmGetContext = 0;
+typedef BOOL (WINAPI* flTypeImmSetCompositionWindow)(HIMC, LPCOMPOSITIONFORM);
+static flTypeImmSetCompositionWindow flImmSetCompositionWindow = 0;
+typedef BOOL (WINAPI* flTypeImmReleaseContext)(HWND, HIMC);
+static flTypeImmReleaseContext flImmReleaseContext = 0;
+typedef BOOL (WINAPI* flTypeImmIsIME)(HKL);
+static flTypeImmIsIME flImmIsIME = 0;
+
+static HMODULE get_imm_module() {
+  if (!s_imm_module) {
+    s_imm_module = LoadLibrary("IMM32.DLL");
+    if (!s_imm_module)
+      Fl::fatal("FLTK Lib Error: IMM32.DLL file not found!\n\n"
+        "Please check your input method manager library accessibility.");
+    flImmGetContext = (flTypeImmGetContext)GetProcAddress(s_imm_module, "ImmGetContext");
+    flImmSetCompositionWindow = (flTypeImmSetCompositionWindow)GetProcAddress(s_imm_module, "ImmSetCompositionWindow");
+    flImmReleaseContext = (flTypeImmReleaseContext)GetProcAddress(s_imm_module, "ImmReleaseContext");
+    flImmIsIME = (flTypeImmIsIME)GetProcAddress(s_imm_module, "ImmIsIME");
+  }
+  return s_imm_module;
+}
+
 //
 // USE_TRACK_MOUSE - define it if you have TrackMouseEvent()...
 //
@@ -191,7 +221,8 @@ void fl_reset_spot()
 
 void fl_set_spot(int font, int size, int x, int y, int w, int h)
 {
- 	HIMC himc = ImmGetContext(fl_msg.hwnd);
+	get_imm_module();
+ 	HIMC himc = flImmGetContext(fl_msg.hwnd);
  	if (himc) {
  		Fl_Window* w = fl_find(fl_msg.hwnd);
 
@@ -202,9 +233,9 @@ void fl_set_spot(int font, int size, int x, int y, int w, int h)
  		cfs.ptCurrentPos.x = x;
  		cfs.ptCurrentPos.y = y - w->labelsize();
  		MapWindowPoints(fl_msg.hwnd, fl_xid(w), &cfs.ptCurrentPos, 1);
- 		ImmSetCompositionWindow(himc, &cfs);
+ 		flImmSetCompositionWindow(himc, &cfs);
 
- 		ImmReleaseContext(fl_msg.hwnd, himc);
+ 		flImmReleaseContext(fl_msg.hwnd, himc);
  	}
 }
 
@@ -558,7 +589,7 @@ void fl_get_codepage()
 	fl_codepage = ccp;
 	if (fl_aimm) {
 		  fl_aimm->GetCodePageA(GetKeyboardLayout(0), &fl_codepage);
-	} else if (ImmIsIME(hkl)) {
+	} else if (get_imm_module() && flImmIsIME(hkl)) {
 		fl_is_ime = 1;
 	}
 }

test/dnd-test.cxx

@@ -1,75 +0,0 @@
-/* Drag and Drop test demo. */
-#include <stdio.h>
-#include <FL/Fl.H>
-#include <FL/Fl_Window.H>
-#include <FL/Fl_Box.H>
-
-static Fl_Window *win_a;
-static Fl_Window *win_b;
-
-class Sender : public Fl_Box {
-public:
-    Sender(int x,int y,int w,int h) : Fl_Box(x,y,w,h) { }
-
-    int handle(int event) {
-        int ret = Fl_Box::handle(event);
-        switch ( event ) {
-            case FL_PUSH:
-                Fl::copy("message",7,0);
-                Fl::dnd();
-                return(1);
-        }
-        return(ret);
-    }
-};
-
-class Receiver : public Fl_Box {
-public:
-    Receiver(int x,int y,int w,int h) : Fl_Box(x,y,w,h) { }
-
-    int handle(int event) {
-        int ret = Fl_Box::handle(event);
-        switch ( event ) {
-            case FL_DND_ENTER:
-            case FL_DND_DRAG:
-            case FL_DND_RELEASE:
-                return(1);
-            case FL_PASTE:
-                label(Fl::event_text());
-                fprintf(stderr, "PASTE: %s\n", Fl::event_text());
-				fflush(stderr);
-                return(1);
-        }
-        return(ret);
-    }
-};
-//
-// Demonstrate DND (drag+drop) from red sender to green receiver
-//
-
-static Sender *Tx;
-static Receiver *Rx;
-
-int main(int argc, char **argv) {
-	win_a = new Fl_Window(40, 40, 200,100);
-	win_a->begin();
-	Tx = new Sender(5,5,90,90);
-	  Tx->box(FL_UP_BOX);
-	  Tx->label("Drag from here");
-	  Tx->align(FL_ALIGN_WRAP);
-	  Tx->color(FL_RED);
-	win_a->end();
-	win_a->show(argc, argv);
-
-	win_b = new Fl_Window (350, 40, 200,100,"Receiver");
-	win_b->begin();
-	Rx = new Receiver(105,5,90,90);
-	  Rx->box(FL_FLAT_BOX);
-	  Rx->label("to here");
-	  Rx->color(FL_GREEN);
-	win_b->end();
-	win_b->show();
-
-	return Fl::run();
-}
-/* End of File */