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25 API Function starting with letter R
Sort: Top 50 API | Top 50 Rated Rated API
ReleaseCapture
Public Declare Function ReleaseCapture Lib "user32" () As Long...Hits: 1865 Rating:
(3.10) votes 581
Category: System
RegCreateKey
The RegCreateKey function creates the specified key. If the key already exists in the registry, the function opens it. This function is provided for compatibility with Windows version 3.1. Win32-based applications should use the RegCreateKeyEx function....Hits: 2962 Rating:
(3.08) votes 355
Category: Registry
RemoveFontResource
The RemoveFontResource function removes the fonts in the specified file from the Windows font table....Hits: 1813 Rating:
(2.93) votes 685
Category: Font
RegisterHotKey
The RegisterHotKey function defines a system-wide hot key....Hits: 3876 Rating:
(2.98) votes 450
Category: HotKey
RegSaveKey
The RegSaveKey function saves the specified key and all of its subkeys and values to a new file....Hits: 3742 Rating:
(2.85) votes 813
Category: Registry
RegRestoreKey
The RegRestoreKey function reads the registry information in a specified file and copies it over the specified key. This registry information may be in the form of a key and multiple levels of subkeys....Hits: 1919 Rating:
(3.20) votes 340
Category: Registry
RegOpenKey
The RegOpenKey function opens the specified key. This function is provided for compatibility with Windows version 3.1. Win32-based applications should use the RegOpenKeyEx function....Hits: 3600 Rating:
(2.83) votes 383
Category: Registry
RegNotifyChangeKeyValue
The RegNotifyChangeKeyValue function notifies the caller about changes to the attributes or contents of a specified registry key. Note that the function does not notify the caller if the specified key is deleted....Hits: 2282 Rating:
(2.91) votes 399
Category: Registry
RegEnumValue
The RegEnumValue function enumerates the values for the specified open registry key. The function copies one indexed value name and data block for the key each time it is called....Hits: 2865 Rating:
(3.06) votes 344
Category: Registry
RegEnumKeyEx
The RegEnumKeyEx function enumerates subkeys of the specified open registry key. The function retrieves information about one subkey each time it is called....Hits: 3609 Rating:
(2.84) votes 846
Category: Registry
RegDeleteValue
The RegDeleteValue function removes a named value from the specified registry key....Hits: 2065 Rating:
(3.20) votes 336
Category: Registry
RegDeleteKey
Windows 95: The RegDeleteKey function deletes a key and all its descendents. Windows NT: The RegDeleteKey function deletes the specified key. This function cannot delete a key that has subkeys....Hits: 2681 Rating:
(2.86) votes 690
Category: Registry
Rectangle
Rectangle draws a rectangular-shaped box on a graphics-capable device. The rectangle is drawn in the device's current drawing color and is filled using its current filling color and brush, if any. The function returns 0 if an error occured, or 1 if successful. ...Hits: 2269 Rating:
(2.90) votes 689
Category: Rectangle
RoundRect
RoundRect draws a rectangle with rounded corners on a graphics-capable device. The rounded rectangle is drawn in the device's current drawing color and is filled using its current filling color and brush, if any. The first two (x,y) coordinate pairs specified are the upper-left and lower-right corne...Hits: 2352 Rating:
(2.96) votes 497
Category: Rectangle
ReleaseDC
ReleaseDC frees up the resources used when you use GetDC to get an object's device context. This function should not be used to destroy a device context obtained from CreateDC -- for those, use DeleteDC instead. This should be done after your program finishes using the device context. The function r...Hits: 1798 Rating:
(3.05) votes 516
Category: Device
RemoveMenu
The RemoveMenu function deletes a menu item from the specified menu. If the menu item opens a drop-down menu or submenu, RemoveMenu does not destroy the menu or its handle, allowing the menu to be reused....Hits: 2204 Rating:
(3.01) votes 448
Category: Menu
ReadConsole
The ReadConsole function reads character input from the console input buffer and removes it from the buffer....Hits: 2097 Rating:
(2.97) votes 371
Category: Console
ReadFile
ReadFile reads data from an open file and puts the data in the variable passed as lpBuffer. The function also puts the number of bytes of data actually read into the variable passed as lpNumberOfBytesRead. The file must of course have been opened with read-level access. The function starts reading f...Hits: 5869 Rating:
(3.14) votes 402
Category: File
RECT Structure
RECT-type variables hold a rectangle. This structure defines a rectangle by storing the coordinates of its upper-left and lower-right corners. ...Hits: 1329 Rating:
(3.30) votes 200
Category: Rectangle
RemoveDirectory
RemoveDirectory deletes a directory from a disk. The function will not delete any files or subdirectories inside the directory. If the directory to delete is not completely empty, the function will fail. The function returns 1 if successful, or 0 if an error occured. ...Hits: 1544 Rating:
(3.16) votes 282
Category: System