page width problem in rendering plug-in


I have written rendering-plugin COM for Windows 2000. It works similar to generic text only driver. Now the problem is that it does not print anything when page width is more that around 9-10 inch. It just throws out some pages. Internally I have checked that it calls DrvTextOut for all text strings for rendering but it does not call DrvSendPage function at all. I want to print using custom page of 15X12 inch so that in condensed mode it prints properly on A4 page. Can anybody tell me where thing went wrong ? Any problem with .gpd , .inf or .ini file ???