digitalmars.D - Access Violation after declaration second objet of the same type
- Zarathustra (119/119) Oct 20 2009 Sorry for long code, but I can't find the cause the problem.
Sorry for long code, but I can't find the cause the problem. // module window module window; private import base; private import structs; private static import user32; private static import kernel32; private static import gdi32; private: extern (Windows) dword wndProc(ptr o_hwnd, dword o_msg, dword o_wparam, dword o_lparam){ alias user32.EWindowMessage WM; Window* l_wnd = (cast(Window*)user32.getWindowLong(o_hwnd, 0x00)); if(o_msg == WM.NCCREATE){ user32.setWindowLong(o_hwnd, 0x00, *(cast(dword*)o_lparam)); } else if(l_wnd is null){ return 0x00; } return (cast(Window*)user32.getWindowLong(o_hwnd, 0x00)).wndProc(o_hwnd, o_msg, o_wparam, o_lparam); } extern void d_assert_msg(dword, void*, dword, void*); public: class Window{ private const ptr handle; private static WINWndClassEx wndClass; void onMouseDown(MouseEventArgs o_mea){ user32.messageBox(null, cast(wstr)"INSIDE", cast(wstr)"msg", 0x00); } static this(){ wndClass.size = 0x00000030; wndClass.style = 0x00000003; wndClass.wndProc = cast(ptr)&.wndProc; wndClass.clsExtraBytes = 0x00000000; wndClass.wndExtraBytes = 0x00000004; wndClass.hInstance = kernel32.getModuleHandle(null); wndClass.hIcon = user32.loadIcon(null, 0x00007F00); wndClass.hCursor = user32.loadCursor(null, 0x00007F00); wndClass.hbrBackground = gdi32.getStockObject(0x00000000); wndClass.menuName = null; wndClass.className = cast(wstr)"clsname"; wndClass.hIconSm = user32.loadIcon(null, 0x00007F00); if(!user32.registerClassEx(cast(ptr)&wndClass)){ user32.messageBox(null, user32.translateErrorCode(kernel32.getLastError()), cast(wstr)"error", 0x00000000); assert(false, "window class registering failed"); } } this(){ handle = user32.createWindowEx( 0, cast(wstr)"clsname", cast(wstr)"<applicationcaption>", 0x00CF0000, 0x00000000, 0x00000000, 0x00000280, 0x000001E0, null, null, kernel32.getModuleHandle(null), cast(ptr)&this ); if(handle is null){ user32.messageBox(null, user32.translateErrorCode(kernel32.getLastError()), cast(wstr)"error", 0x00000000); assert(false, "window creating failed"); } } public void run(){ WINMsg msg; user32.showWindow(handle, 0x0000000A); user32.updateWindow(handle); while(user32.getMessage(cast(ptr)&msg, null, 0, 0)){ user32.translateMessage(cast(ptr)&msg); user32.dispatchMessage(cast(ptr)&msg); } } private dword wndProc(ptr o_hwnd, dword o_msg, dword o_wparam, dword o_lparam){ alias user32.EWindowMessage WM; alias user32.EMouseKey WK; switch(o_msg){ case WM.DESTROY: user32.postQuitMessage(0x00); break; case WM.LBUTTONDOWN: MouseEventArgs l_mea; l_mea.button = MouseButton.LEFT; l_mea.location.x = loword(o_lparam); l_mea.location.y = hiword(o_lparam); user32.messageBox(null, cast(wstr)"BEFORE", cast(wstr)"msg", 0x00); onMouseDown(l_mea); break; default: return user32.defWindowProc(o_hwnd, o_msg, o_wparam, o_lparam); } return 0; } } /* the following works correctly when wnd1.onMouseDown */ // main1 void main(){ Window wnd1 = new Window(); Window wnd2; wnd1.run(); } /* the following fails when wnd1.onMouseDown */ // main2 void main(){ Window wnd1 = new Window(); Window wnd2 = new Window(); // allocator wnd1.run(); } Inside ctor of Window class I don't see nothig wrog!
Oct 20 2009