Differences
This shows you the differences between two versions of the page.
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en:ibm:prcp:vio:getfont [2016/02/04 10:45] – created valerius | en:ibm:prcp:vio:getfont [2016/09/15 05:08] (current) – valerius |
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==== VioGetFont ==== | ==== VioGetFont ==== |
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**Bindings**: C, MASM | **Bindings**: [[getfont#C bindings|C]], [[getfont#MASM bindings|MASM]] |
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This call returns either the font table of the size specified or the font in use. | This call returns either the font table of the size specified or the font in use. |
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For [[en:ibm:prcp:vio:getfont|VioGetFont]] specifying reqtype = 1, return ROM font, the font returned is derived from the fonts contained in the system, EGA, VGA, and PS/2 Display Adapter BIOS data areas as applicable. There is an exception for the EGA, VGA and PS/2 Display Adapter when [[en:ibm:prcp:vio:setcp|VioSetCp]] or [[en:ibm:prcp:vio:setfont|VioSetFont]] has been issued. In that case, the font of the size requested is returned from the active code page or the list of user fonts already set. | For [[en:ibm:prcp:vio:getfont|VioGetFont]] specifying reqtype = 1, return ROM font, the font returned is derived from the fonts contained in the system, EGA, VGA, and PS/2 Display Adapter BIOS data areas as applicable. There is an exception for the EGA, VGA and PS/2 Display Adapter when [[en:ibm:prcp:vio:setcp|VioSetCp]] or [[en:ibm:prcp:vio:setfont|VioSetFont]] has been issued. In that case, the font of the size requested is returned from the active code page or the list of user fonts already set. |
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| === C bindings === |
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| <code c> |
| typedef struct _VIOFONTINFO { /* viofi */ |
| USHORT cb; /* length of this structure */ |
| USHORT type; /* request type */ |
| USHORT cxCell; /* pel columns in character cell */ |
| USHORT cyCell; /* pel rows in character cell */ |
| PVOID pbData; /* requested font table (returned) */ |
| USHORT cbData; /* length of caller supplied data area |
| (in bytes) */ |
| } VIOFONTINFO; |
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| #define INCL_VIO |
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| USHORT rc = VioGetFont(RequestBlock, VioHandle); |
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| PVIOFONTINFO RequestBlock; /* Request block */ |
| HVIO VioHandle; /* Vio handle */ |
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| USHORT rc; /* return code */ |
| </code> |
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| === MASM bindings === |
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| <code asm> |
| VIOFONTINFO struc |
| viofi_cb dw ? ;length of this structure |
| viofi_type dw ? ;request type |
| viofi_cxCell dw ? ;pel columns in character cell |
| viofi_cyCell dw ? ;pel rows in character cell |
| viofi_pbData dd ? ;requested font table (returned) |
| viofi_cbData dw ? ;length of caller supplied data area (in bytes) |
| VIOFONTINFO ends |
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| EXTRN VioGetFont:FAR |
| INCL_VIO EQU 1 |
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| PUSH@ OTHER RequestBlock ;Request block |
| PUSH WORD VioHandle ;Vio handle |
| CALL VioGetFont |
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| Returns WORD |
| </code> |
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