Send Keystrokes

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The Send Keystrokes function sends keystrokes to the connected session. The client sends the following message to the session to send keystrokes. 
PostMessage( hServerWnd,
             WM_DDE_POKE,
             hClientWnd,
             MAKELONG(hData, aKEYS) );
where:
hData Identifies a handle to a Windows global memory object that contains the keystrokes to be sent to the session. The global memory object contains the following structure: 
typedef struct tagKeystrokes
{
 unsigned unused:13;              // ** unused **
 unsigned fRelease:1;             // Session frees memory
 unsigned freserved:2;            // ** reserved **
 int      cfFormat;               // Always CF_DSPTEXT
 unsigned uTextType;              // Type of keystrokes
 unsigned uRetryCount;            // Retry count 1 .. 16
 unsigned char szKeyData[1];      // Keystrokes
} KEYSTROKES, FAR *lpKEYSTROKES;
The following key text types are supported: 
WC_PURETEXT   0 // Pure text, no AID, or included HLLAPI
                // commands
WC_HLLAPITEXT 1 // Text, including HLLAPI tokens
Note:
If the keystrokes are pure text then specifying WC_PURETEXT will transfer the keystrokes to the host in the fastest possible manner. If WC_HLLAPITEXT is specified then the keystroke data can contain HLLAPI commands interspersed with the text.
aKEYS Identifies keystrokes as the item.