#!F-adobe-helvetica-medium-r-normal--18* #!N #!N #!Rdxcrih DXCheckRIH #!N #!N Function #!N #!N Checks registered input handlers. #!N #!N Syntax #!N #!F-adobe-times-bold-r-normal--18* #include <dx/dx.h> int DXCheckRIH(int block); #!EF #!N #!N Functional Details #!N #!N This routine must be called periodically in a stand-alone program if the #!F-adobe-times-bold-r-normal--18* DXRegisterInputHandler #!EF routine is used to define an input handler. (The executive provides this function automatically for built-in Data Explorer routines.) #!N #!N #!F-adobe-times-bold-r-normal--18* DXCheckRIH #!EF determines whether any input handlers need to be called and, if so, calls them before returning. The valid arguments for #!F-adobe-times-bold-r-normal--18* block #!EF are: #!N #!I0 #!N #!F-adobe-times-medium-r-normal--18* #!N #!N #!I30 #!N 0 = Check whether any events need handling. If not, return. Otherwise, handle the event(s) and return. #!N #!I30 #!N 1 = Do not return until an event that requires handling occurs. #!N #!I0 #!N #!EF #!N #!N #!N If the Display module is part of your stand-alone program, this routine must be called, since Display uses an input handler to deal with external events (e.g., repainting window contents after they have been obscured). #!N #!N If the SuperviseState module ( #!Lsupstat,dxall958 h SuperviseState #!EL in IBM Visualization Data Explorer User's Reference) is being used in conjunction with Display to implement direct interaction, #!F-adobe-times-bold-r-normal--18* DXCheckRIH #!EF must not be called between SuperviseState and Display. This will ensure that SuperviseState passes up-to-date state information into Display. #!N #!N Return Value #!N #!N Returns 1 if an event required handling; otherwise return 0. #!N #!N See Also #!N #!N #!F-adobe-times-bold-r-normal--18* #!Ldxregih,dxall1354 h DXRegisterInputHandler #!EL #!EF #!N #!N #!N #!F-adobe-times-medium-i-normal--18* Next Topic #!EF #!N #!N #!Ldxcb,dxall1180 h DXClipBox #!EL #!N #!F-adobe-times-medium-i-normal--18* #!N
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