CreateCompatibleDC函数创建与指定设备兼容的内存设备上下文 (DC) 。 语法 C++复制 HDCCreateCompatibleDC( [in] HDC hdc ); 参数 [in] hdc 现有DC 的句柄。 如果此句柄为NULL,则该函数将创建与应用程序的当前屏幕兼容的内存 DC。 返回值 如果函数成功,则返回值是内存 DC 的句柄。
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The CreateCompatibleDC function can only be used with devices that support raster operations. An application can determine whether a device supports these operations by calling the GetDeviceCaps function.When you no longer need the memory device context, call the DeleteDC function to delete it....
if(hdc==NULL) return; // Create compatible HBITMAP hbCanvas=CreateCompatibleBitmap(hdcSkin,ScreenWidth,ScreenHeight); // Select HBITMAP into DC SelectObject(hdcCanvas,hbCanvas); 参考: 互动百科: CreateCompatibleDC MSDN: CreateCompatibleDC
See the CDC::BitBlt method for information regarding bit-block transfers between device contexts. To determine whether a device context supports raster operations, see the RC_BITBLT raster capability in the method CDC::GetDeviceCaps. Example コピー // This OnDraw() handler loads a bitmap ...
选择物理设备环境,则是彩色的。其实第一个链接就是对其中进行探讨,我觉得看到这边不明白可以直接看msdn:http://msdn.microsoft.com/en-us/library/windows/desktop/dd183488(v=vs.85).aspx里面很详细。 具体例子如下: 我们可以使用 HDC hDC = GetDC( NULL );...
两个CreateCompatibleDC (这叫兼容DC，以后就这么说)两个创建兼容DC的函数是不一样的，前者是API后者是DCD类的成员函数。，前者是直接创建一个当前DC的兼容DC然后返回这个创建的兼容DC。后者是先创建一个CDC，然后将这个DCD与当前DC兼容。还不懂?那当我没说 ...
作为参考，当您收到涉及Windows函数的链接错误时，只需搜索该函数并转到该函数的MSDN文档(我已经链接到这...
static WINGDIAPI HDC WINAPI CreateCompatibleDC_I( HDC hdcIn ); ParametershdcIn [in] Handle to an existing device context. If this handle is NULL, the method creates a memory device context compatible with the current screen for the application.Return...