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Screensize: 640 x 480 800 x 600 1024 x 768 1280 x 1024 UserName: Password: Anti-Spam Code: Format Mode: Basic  Help  Prompt  Format: Font Andale Mono Arial Arial Black Book Antiqua Century Gothic Comic Sans MS Courier New Georgia Impact Lucida Console Script MT Bold Stencil Tahoma Times New Roman Trebuchet MS Verdana   Size 1 2 3 4 5 6   Color Black Red Yellow Pink Green Orange Purple Blue Beige Brown Teal Navy Maroon LimeGreen Message: * HTML is OFF * Forum Code is ON Smilies [quote][i]Originally posted by Qiang[/i] [br]Hi, I have a copy of origin pro and Visual C++. The aim is to try to create a dll in C++ to communicate with origin to tell it to create a work sheet by specifying numbe of col and rows inject data close worksheet. by using SendMessage commands. at the moment it seems: int FAR PASCAL TEST3(HWND hWnd, LPSTR lpString) { SendMessage(hWnd, WM_USER, 0, (LONG)(LPSTR)lpString); return 0; } is a good start(?) The dll I'll be creating is only a mock for the real thing. But it is important that I get this done. Thanks Qiang [/quote]   Check here to include your profile signature. Check here to subscribe to this topic.