GetMapMode

If the function fails, the return value is zero. To get extended error information, call GetLastError.

Remarks

The following list describes the various mapping modes:

Value

Description

MM_ANISOTROPIC

Logical units are mapped to arbitrary units with arbitrarily scaled axes. Use the SetWindowExtEx and SetViewportExtEx functions to specify the units, orientation, and scaling that you want.

MM_HIENGLISH

Each logical unit is mapped to 0.001 inch. Positive x is to the right; positive y is up.

MM_HIMETRIC

Each logical unit is mapped to 0.01 millimeter. Positive x is to the right; positive y is up.

MM_ISOTROPIC

Logical units are mapped to arbitrary units with equally scaled axes; that is, one unit along the x-axis is equal to one unit along the y-axis. Use the SetWindowExtEx and SetViewportExtEx functions to specify the units and the orientation of the axes that you want. Graphics device interface makes adjustments as necessary to ensure the x and y units remain the same size (for example, if you set the window extent, the viewport will be adjusted to keep the units isotropic).

MM_LOENGLISH

Each logical unit is mapped to 0.01 inch. Positive x is to the right; positive y is up.

MM_LOMETRIC

Each logical unit is mapped to 0.1 millimeter. Positive x is to the right; positive y is up.

MM_TEXT

Each logical unit is mapped to one device pixel. Positive x is to the right; positive y is down.

MM_TWIPS

Each logical unit is mapped to one twentieth of a printer’s point (1/1440 inch, also called a “twip”). Positive x is to the right; positive y is up.

GetMapMode info Overview Group

Parameters

Return Values

Remarks

See Also

HDC hdc	// handle of device context
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